Jiangsu Changdian Technology Co., Ltd. (600584)

Equity Research Report　|　Industry: Semiconductor Packaging and Testing　|　Report Date: September 13, 2026　|　September 11, 2026 Close (Friday, most recent trading day; September 12, 2026 was Saturday, with no trading)

This report was automatically compiled by AI based on publicly available information and is for reference only. It does not constitute investment advice.

1. Executive Summary

The most decision-relevant development at JCET is that earnings recovery is materially outpacing revenue growth. In the first half of 2026, revenue was RMB 19.527 billion, up 4.96% year on year; net profit attributable to shareholders was RMB 845 million, up 79.41%; non-GAAP attributable net profit was RMB 808 million, up 84.73%; and gross margin rose to 15.15%. In 2Q26 alone, attributable net profit was RMB 554 million, up 107.30% year on year and approximately 90.98% quarter on quarter. However, although FY2025 revenue reached a record RMB 38.871 billion, attributable net profit declined 2.75% year on year. Therefore, the high growth rate in 1H26 still partly reflects a low-base effect in the same period of 2025.

The company is the world’s third-largest and mainland China’s largest OSAT. In 2025, chip packaging and testing revenue was RMB 38.714 billion, accounting for 99.60% of total revenue. Growth momentum is shifting from traditional communications and consumer electronics toward computing electronics, automotive electronics and advanced packaging. In 1H26, computing electronics accounted for 30.1% of revenue and grew 40.4% year on year, while automotive electronics accounted for 11.1% and grew 25.0%. The XDFOI high-density heterogeneous chiplet integration platform has entered volume production, and CPO silicon-photonic engine products have completed customer sample delivery and validation.

The sustainability of earnings improvement depends on product-mix upgrades and higher utilization of new capacity, rather than a recovery in conventional pricing power. Materials now account for 68.65% of chip packaging and testing costs. Price fluctuations in substrates, lead frames, gold wire and molding compounds could directly affect gross margin. Meanwhile, the top five customers accounted for 48.80% of revenue in 2025, indicating continued high downstream concentration. The company plans to raise no more than RMB 6.5 billion through a private placement, with proceeds directed toward advanced high-performance-computing packaging, power modules, wafer-level packaging, memory packaging and testing, and liquidity replenishment and debt repayment. The plan remains subject to approval and implementation.

As of September 11, 2026, the share price was RMB 67.74 and total market capitalization was approximately RMB 121.215 billion, representing a retreat of approximately 40.5% from the 52-week high of RMB 113.87, but an increase of approximately 96% from the 52-week low. The 20-day and 60-day returns were -15.21% and -19.52%, respectively. Current TTM P/E and forward P/E were approximately 62.51x and 71.76x, respectively, indicating a relatively high valuation. The market already has high expectations for advanced-packaging volume ramp-up and earnings improvement.

2. Company Overview

2.1 Basic Information

2.2 Main Businesses and Product Layout

• One-stop chip manufacturing (packaging and testing) services: microsystem integration, design simulation, product certification, wafer probing, wafer-level middle-end packaging and testing, system-level packaging and testing, final chip testing, and global direct shipment (2025 “chip packaging and testing” revenue of RMB 38.714 billion, representing 99.60% of revenue)
• Other supplementary businesses: 2025 revenue of RMB 157.2 million, representing 0.40% of revenue

2.3 Position in the Upstream and Downstream Value Chain and Cost-Profit Structure

JCET’s main business is one-stop final chip manufacturing (packaging and testing). Chip packaging and testing revenue was RMB 38.714 billion in 2025, representing 99.60% of revenue. The company is the world’s third-largest and mainland China’s largest OSAT. Its actual position in the semiconductor value chain is assessed below from four dimensions: upstream costs, downstream customers, working-capital utilization and gross-margin trends.

• The company’s key purchased inputs are packaging substrates, lead frames, gold/alloy wire and molding compounds (epoxy molding compounds). The company stated on Interactive Easy: “The company’s raw materials mainly include substrates, lead frames, gold wire (alloy wire) and molding compounds, whose prices fluctuate with the prices of basic raw materials” (source: Tonghuashun Interactive Easy).
• Materials’ share of chip packaging and testing costs has continued to rise: 63.34% in 2019, 63.44% in 2021 (materials of RMB 15,724.9308 million), and 68.65% in 2025 (materials of RMB 22,869.6609 million). Source: 2019, 2021 and 2025 annual reports.
• Historical comparison: Shenwan Hongyuan noted in a 2018 in-depth report that before the STATS ChipPAC acquisition, materials accounted for 67.79% of total costs and depreciation 10.62%; after including STATS ChipPAC, insufficient capacity utilization reduced the materials ratio to 58.84% while depreciation rose to 14.35% (source: Shenwan Hongyuan research report).
• Bargaining-power assessment: Materials account for nearly 70% of costs and mainly comprise substrates, gold wire and other items exposed to bulk-commodity and precious-metal price fluctuations. JCET is essentially a price taker in this area and has no absolute pricing power over suppliers. Its response has been to “implement centralized procurement for the original JCET and STATS ChipPAC, enhancing bargaining power with suppliers” (original Interactive Easy wording). The 2025 earnings decline was explicitly attributed to “a substantial increase in international bulk-commodity prices, with the cost of certain raw materials exerting significant pressure on gross margin” (source: Securities Star/Tiger Brokers reprint, single source).
• Supplier concentration: The top five suppliers accounted for RMB 10.190 billion of purchases in 2022, or 46.90% of annual purchases (source: China Securities Intelligent Financial News/NetEase reprint dated 2023-03-30). This is the only official supplier-concentration figure found in this search. Data for 2023–2025 was not obtained and requires further review of the “major suppliers” section of the annual reports.
• Customer structure: The company states that “85% of the world’s top 20 semiconductor companies have become our customers,” ranking among the top three in the OSAT industry (source: CLS individual-stock page). Customers include IC design companies, fabless companies and foundries, with business organizations across more than 20 countries.
• Customer concentration (official basis): The top five customers accounted for RMB 18.969 billion, or 48.80% of revenue, in 2025; in 2024, they accounted for RMB 18.816 billion, or 52.32% of revenue (source: Chaguwang/Tonghuashun F10 operating analysis). Historical series: 51.40% in 2022 (RMB 17.351 billion); 33.35% in 2019 (RMB 7.842 billion); and 24.13% in 2018 (RMB 5.731 billion).
• Structural pricing pressure in the industry: Packaging and testing is positioned at the back end/downstream of the semiconductor chain. It is a price taker for upstream materials, while facing annual price negotiations and utilization-driven bargaining pressure from downstream IC design customers. This is a general feature of the OSAT industry, rather than an explicit “annual price-down clause” typical of automotive Tier-1 suppliers. Specifically for JCET, communications and consumer electronics together represented approximately 60% of 2025 revenue, and these are the most competitive areas, explaining the 12.18% year-on-year decline in communications-electronics revenue in 2025.
• Caution: Since 2025, AI-computing demand has driven advanced-packaging capacity to full utilization. Statements such as “first-round price increases of 5%–20%, higher increases for CoWoS-type advanced packaging, and gross-margin expansion of 3–8 percentage points” come from a Xueqiu user post and are self-media/personal analysis, not official or broker data, and should not be cited as fact.
• Contradictory single-source example: A Caifuhao article on Eastmoney claimed that “the top five customers account for only approximately 30%, with no risk of reliance on a single customer,” directly contradicting official disclosures of 48.80% in 2025 and 52.32% in 2024. It is deemed inaccurate and not relied upon. The same article’s detailed customer list and shares—“NVIDIA CoWoS-L, AMD MI300, Qualcomm accounting for 18% of revenue, and SK hynix HBM3E exclusive packaging”—have likewise not been corroborated by any official or broker source and are not used as facts in this report.
• Verifiable evidence: As of 2017-12-31, 7.69% of accounts receivable was attributable to the largest customer and 28.81% to the top five customers, compared with 8.98% and 26.15%, respectively, in 2016 (source: 2017 annual report, Sina Finance). Specific figures for 2023–2025 accounts-receivable days, accounts receivable/revenue, and turnover of prepayments and accounts payable were not obtained in this search. This is the largest information gap in this section. Data cannot directly prove whether JCET has gained or lost bargaining power relative to downstream customers; inferences can only be made indirectly from gross margin and customer concentration. An indirect cash-flow signal is net operating cash flow of RMB 4.652 billion in 2025, down 20.26% year on year (source: Securities Star/Tiger Brokers reprint, single source, not cross-checked against the annual report). Further review is recommended of the 2025 annual report’s accounts-receivable note and the ratio of cash received from sales of goods to revenue in the consolidated cash-flow statement.
• Customer concentration: The top five customers accounted for RMB 18.969 billion, or 48.80% of revenue, in 2025; in 2024, they accounted for RMB 18.816 billion, or 52.32% (source: Chaguwang/Tonghuashun F10 operating analysis, official basis). Historical series: 51.40% in 2022; 33.35% in 2019; and 24.13% in 2018. Supplier concentration: the top five suppliers accounted for RMB 10.190 billion of purchases, or 46.90% of annual purchases, in 2022 (source: China Securities Intelligent Financial News/NetEase reprint dated 2023-03-30); data for 2023–2025 is unavailable. Note: the Eastmoney Caifuhao article claiming that the top five customers accounted for “only approximately 30%” clearly contradicts official disclosures of 48.80% in 2025 and 52.32% in 2024 and is not relied upon.

JCET is positioned in the lower-middle portion of the semiconductor smile curve, namely back-end manufacturing and processing. It has little pricing power over substrates, gold wire, molding compounds and other materials, which represented 68.65% of costs and fluctuate with commodity prices. Downstream, bargaining room is limited with the top five IC design customers, which account for approximately half of revenue. As a result, gross margin has remained structurally thin at 13%–15%. There are only three genuine drivers of further gross-margin improvement: (1) migration from communications and consumer electronics toward computing electronics (+42.12% in 2025), automotive electronics (+31.35%) and industrial and medical applications (+40.52%), as well as advanced packaging and other high-value-added applications; (2) higher value per unit generated by advanced technologies such as XDFOI, 2.5D/3D, SiP, CPO and glass substrates; and (3) scale effects and depreciation dilution after new capacity at JCET Microelectronics and the JSAC automotive-electronics plant moves beyond the ramp-up stage. Investing in JCET is not a bet on “pricing power returning,” but on “product-mix upgrading.”

3. Financial Data and Valuation Analysis

3.1 Recent Operating Performance

Multiple sources for the 1H26 report are cross-consistent (Securities Star dated 2026-09-11/09-12, Eastmoney financial-results commentary and China Business Journal dated 2026-09-12), indicating high reliability. Note: the Huaxi Securities page lists “net profit of RMB 822 million” alongside “net profit growth of 84.73%”; the latter is actually the non-GAAP growth rate, reflecting mixed definitions. The figures of “RMB 845 million attributable net profit/RMB 808 million non-GAAP attributable net profit” should be used. Other 1H26 data: non-GAAP attributable net profit of RMB 808 million (+84.73%); gross margin of 15.15% (+1.68ppt); net margin of 4.21% (+1.69ppt); debt-to-asset ratio of 46.22%; finance expenses of RMB 205 million; investment income of -RMB 48.8862 million; basic EPS of RMB 0.47 (approximately +80.8%); operating cash flow of RMB 2.964 billion. 2Q26 non-GAAP net profit was RMB 544 million (+122.4%); quarter-on-quarter net-profit growth versus 1Q was approximately 90% (this figure appears in only one source). Other FY2025 data: non-GAAP attributable net profit of RMB 1.369 billion (-11.51%); gross margin of 14.15% (+1.09ppt); net margin of 4.04%; total profit of RMB 1.738 billion (+5.42%). TTM non-GAAP net profit was approximately RMB 1.740 billion (+24.0%); TTM ROE approximately 6.7%; gross margin 15.2% (independently checked: 15.65-4.71+8.45=19.39, consistent with the source; FT TTM revenue of RMB 39.79 billion/net profit of RMB 1.94 billion is also consistent). Historical-base sources: Kaiyuan Securities annual-report commentary (2026-04-13/14), Sohu Securities, Baidu Gushitong and Zonebourse/S&P Capital IQ (2026-04-09). Note that the 2025 comparison includes a low-base effect: FY2025 attributable net profit declined 2.75% year on year, while 1H25 net profit was only RMB 471 million. The 79% growth in 1H26 therefore contains a clear low-base component, as also noted by Goldman Sachs.

In 1H26, revenue was RMB 19.527 billion (+4.96%), attributable net profit RMB 845 million (+79.41%), and non-GAAP attributable net profit RMB 808 million (+84.73%). Profit growth significantly exceeded revenue growth, mainly due to a 1.68ppt year-on-year increase in gross margin to 15.15%, a 1.69ppt increase in net margin to 4.21%, and a shift in product mix toward high-end advanced packaging. In quarterly terms, 2Q26 revenue was RMB 10.356 billion (+11.72%), attributable net profit RMB 554 million (+107.3%), and non-GAAP net profit RMB 544 million (+122.4%); net profit increased approximately 90% sequentially from 1Q, indicating accelerating improvement. 1Q revenue was RMB 9.171 billion (-1.76% year on year), while attributable net profit was RMB 290 million (+42.74%). By application in 1H26, computing electronics accounted for 30.1%, communications electronics 27.4%, consumer electronics 23.2%, automotive electronics 11.1%, and industrial and medical applications 8.2%, making computing electronics the largest application. On a TTM basis through 1H26, revenue was approximately RMB 39.793 billion (+1.8%), net profit approximately RMB 1.939 billion (+32.7%), non-GAAP net profit approximately RMB 1.740 billion (+24.0%), TTM ROE approximately 6.7%, and gross margin 15.2%. Operating cash flow in 1H was RMB 2.964 billion. The 79% net-profit growth in 1H26 includes a low-base effect from 2025, when FY2025 attributable net profit declined 2.75% and 1H25 net profit was only RMB 471 million. The mixed net-profit definitions on the Huaxi Securities page should also be noted; the consistent multi-source figures of RMB 845 million attributable net profit and RMB 808 million non-GAAP net profit are used here.

3.2 Earnings Forecasts

Consensus source: Eastmoney earnings-forecast summary page (http://emweb.securities.eastmoney.com/ProfitForecast/Index?type=web&code=SH600584), data through August–September 2026. The 2026E attributable net-profit forecast is RMB 2.103 billion from 20 institutions, followed by RMB 2.719 billion in 2027E and RMB 3.322 billion in 2028E; 2026E revenue is RMB 43.76 billion, 2027E RMB 49.47 billion and 2028E RMB 55.24 billion; 2026E operating profit is RMB 2.278 billion from 19 institutions, followed by RMB 2.961 billion and RMB 3.617 billion; forecast ROE is 6.85%, 8.25% and 9.22%, respectively. The “previous month” forecast was EPS of RMB 1.1160 for 2026E from 15 institutions, RMB 1.3973 for 2027E and RMB 1.6967 for 2028E, indicating broad upward revisions after 1H results and an expanding sample size. More recent data are more reliable. Detailed individual-stock forecasts are sourced from Stock Tool, Eastmoney research page AP202608251828397688 and Sina Finance research pages. Earlier data are sourced from Tonghuashun (2026-04-17, 2026-04-11 and 2026-04-15) and Sina Finance research pages. Key uncertainties: (1) forecast definitions and timing are highly sensitive. The April 2026 “target average price of RMB 48.31/2026E net profit of RMB 2.017 billion” differs sharply from the post-1H August–September figures of “target average price RMB 93.16/RMB 94.09/net profit RMB 2.103 billion”; report dates must be stated and figures must not be mixed; (2) dispersion is extremely wide. Goldman Sachs forecast 2026 net profit of RMB 2.797 billion, materially above the domestic consensus at that time, and should not be treated as consensus; (3) consensus forecasts are dynamic and should be rechecked against the latest complete report page. Data labeled “before 1H, outdated” are provided only for historical comparison.

3.3 Valuation and Institutional Ratings

At the September 11, 2026 close, the share price was RMB 67.74 (-0.56% on the day; up 0.56% from the previous week’s RMB 67.36), with total market capitalization equal to free-float market capitalization of RMB 121.215 billion. Total shares and free-float shares were both 1.789 billion, indicating full circulation. Valuation: TTM P/E 62.51x; static P/E 77.44x; forward P/E 71.76x (Eastmoney basis, using estimated full-year net profit); P/B 4.19x; book value per share RMB 16.1755; TTM EPS approximately RMB 1.08 (MarketWatch, consistent with RMB 1.939 billion/1.789 billion shares); 52-week range RMB 34.58–113.87. Baidu Gushitong characterizes the stock as being at a relatively high valuation over the past three years and at an average level within the industry.

Key uncertainties include: (1) different valuation definitions—TTM P/E 62.51x, static P/E 77.44x and forward P/E 71.76x coexist, while some portals report different figures because of different prices and data-capture times. Aastocks on 2026-09-02 showed P/E 82.46x/TTM P/E 66.43x, P/B 4.48x and market capitalization of RMB 128.373 billion; Ping An Securities showed P/B 4.72x, forward P/E 80.85x, TTM P/E 70.43x and market capitalization of RMB 136.5 billion; Morningstar showed RMB 73.62. The September 11 close of RMB 67.74 and market capitalization of RMB 121.2 billion should be used as the common benchmark; (2) institutional target-price dispersion is extremely wide, from Goldman Sachs at RMB 50.9 (Neutral, implying 30.2% downside) to JPMorgan at RMB 115 (Overweight), a difference of more than 100%; no single view should be treated as consensus; (3) forecasts and ratings are highly time-sensitive. The April “average target price of RMB 48.31/2026E net profit of RMB 2.017 billion” differs sharply from the post-1H August–September figures of “RMB 93.16/RMB 94.09/net profit of RMB 2.103 billion,” mainly due to substantial AI advanced-packaging-driven re-rating and collective upward revisions between April and August 2026; report dates must be specified; (4) consensus is dynamic. Eastmoney’s 2026E net-profit forecast of RMB 2.103 billion comes from 20 institutions, versus 15 institutions and EPS of RMB 1.1160 in the prior month; the sample is expanding and estimates are being revised upward, so newer data are more reliable; and (5) the 79% net-profit growth in 1H26 contains a clear low-base effect from 2025.

4. Recent News and Announcements

4.1 1H26 Report: Revenue of RMB 19.527 Billion, Up 4.96%; Attributable Net Profit of RMB 845 Million, Up 79.41%

The report was disclosed on August 19–20, 2026, with formal disclosure on the evening of August 20. Key figures: revenue of RMB 19.527 billion, up 4.96% year on year and a record high for the period; attributable net profit of RMB 845 million, up 79.41%; non-GAAP attributable net profit of RMB 808 million, up 84.73%; basic EPS of RMB 0.47, up 80.77%; and net operating cash flow of RMB 2.964 billion, up 26.75%, implying a cash-to-revenue ratio of 108.4%. In 2Q26, revenue was RMB 10.356 billion (+11.72% year on year, +12.92% quarter on quarter); attributable net profit was RMB 554 million (+107.30% year on year, +90.98% quarter on quarter); 1Q net profit was RMB 290 million. R&D expenses were RMB 1.03 billion, or 5.3% of revenue. Revenue mix: computing electronics 30.1%, communications electronics 27.4%, consumer electronics 23.2%, automotive electronics 11.1%, and industrial and medical applications 8.2%; computing electronics grew 40.4% year on year, automotive electronics 25.0%, and testing services 9.4%. Interim dividend: based on total shares of 1.789 billion, the company plans to distribute RMB 0.05 per share before tax, or approximately RMB 89.47 million in total. Sources: cnstock.com, stcn.com, CLS, Gelonghui and nbd.com.cn, with multiple sources consistent and considered reliable.

4.2 RMB 6.5 Billion Private Placement Plan: A-Share Issuance to Specific Investors, with Controlling Shareholder Panshi Runqi to Subscribe for 22.53%

Disclosed on the evening of September 3, 2026, and reported/announced on September 4 (Announcement Nos. Lin 2026-053 to 057). The company plans to issue A shares to specific investors and raise no more than RMB 6.5 billion. The number of shares issued will not exceed 536,824,371, or 537 million shares, representing no more than 30% of pre-issue total shares. Note that 537 million shares is the regulatory cap; the actual number implied by the RMB 6.5 billion fundraising ceiling and issue price will be materially lower and should not be misread. The investors will include controlling shareholder Panshi Runqi (Shenzhen) Information Management Co., Ltd. and no more than 35 specific investors. Panshi Runqi plans to subscribe in cash for 22.53% of the total proceeds and will remain the controlling shareholder after the issuance. Pricing will be based on a book-building offering at no less than 80% of the average price over the 20 trading days preceding the pricing reference date, namely the first day of the offering period. Lock-up periods are 18 months for Panshi Runqi and six months for other investors.

Use of proceeds, with total project investment of approximately RMB 9.57 billion: (1) RMB 1.5 billion for expansion of a high-performance-computing advanced-packaging platform (total investment RMB 2.351 billion; implemented by JCET Microelectronics at No. 1 Dong’an Road, Jiangyin; construction period 20 months); (2) RMB 1.0 billion for upgrading advanced packaging and testing capacity for high-end power modules (total investment RMB 1.636 billion; FCLGA packaging and modules for high-power AI data-center supplies); (3) RMB 1.1 billion for upgrading and expanding an advanced wafer-level packaging process platform (total investment RMB 1.832 billion; implemented by JCET Advanced, expanding bumping capacity); (4) RMB 1.0 billion for upgrading system-level packaging and testing capacity for high-density, large-capacity memory chips (total investment RMB 1.851 billion; implemented by STATS ChipPAC, covering FBGA/FCCSP); and (5) RMB 1.9 billion for replenishing working capital and repaying bank loans. The transaction constitutes a related-party transaction but not a material asset restructuring. It requires state-owned-assets approval, shareholder approval, SSE review and CSRC registration before implementation and therefore remains uncertain. The company also announced that it had not been penalized or subjected to regulatory measures by securities regulators or stock exchanges during the past five years.

Market reaction: September 3 close of RMB 71.27 and market capitalization of RMB 127.532 billion; September 4 close of RMB 67.36, down 5.49%; year-to-date gain as of September 3 of approximately 93.99%. Sources: stcn.com, The Paper, Dazhong Securities News, NBD and SSE announcements, with multiple sources consistent.

4.3 Equity Incentive: Stock-Option Grant Results—17.7223 Million Options Granted to 577 People at RMB 36.79 per Option

Announcement dated September 11, 2026; grant date was August 19, 2026, approved at the third meeting of the ninth board. Stock options totaling 17.7223 million were granted to 577 incentive recipients at an exercise price of RMB 36.79 per option. After three recipients resigned, the number of recipients was reduced from 580 to 577 and the number of options from 17,894,100 to 17,722,300. Following implementation of the 2025 annual distribution, the exercise price was adjusted from RMB 36.89 to RMB 36.79. The maximum validity period is 60 months, with vesting periods of 24, 36 and 48 months from the grant date. Options granted to directors and executives included 100,000 to director and CFO Liang Zheng, 75,000 to board secretary Yuan Yan, and 65,000 to employee director Ma Yue. Middle managers and key employees, totaling 574 people, received 17.4823 million options. Sources: Sina Finance, Securities Star and CFi.cn, all consistent.

4.4 Capacity Investment: RMB 7.8 Billion Shanghai Lingang High-End Advanced Packaging and Testing Plant; Lingang Automotive-Electronics Plant Began Production in March 2026

The company announced an investment of RMB 7.8 billion to build a high-end advanced packaging and testing plant in Shanghai Lingang. A wholly owned subsidiary was established as the implementation entity in July 2026, with registered capital of RMB 4.0 billion (sources: Shanghai Securities Journal/Securities Times, 2026-08-20). The Lingang automotive-electronics plant began production in March 2026 and entered mass production in 2Q (source: NBD, 2026-08-20). Since commencing production, the JCET Microelectronics high-end advanced-packaging plant has advanced capacity construction, customer certification and project introduction. The XDFOI high-density multidimensional heterogeneous chiplet integration platform is in volume production, and CPO silicon-photonic engine products have completed customer sample delivery and validation. In 1H, 444 new patent applications were filed (+30.6%) and 152 patents were granted (+27.7%).

4.5 Dividend/Distribution History: 2025 Annual Report RMB 0.10 per 10 Shares (Ex-Date 2026-06-23), 2025 Interim Report RMB 0.03 per 10 Shares (Ex-Date 2025-09-26), 2026 Interim Proposal RMB 0.05 per 10 Shares

2025 annual distribution: RMB 0.10 per 10 shares, ex-date June 23, 2026, already implemented and the main reason for the stock-option exercise-price adjustment. 2025 interim distribution: RMB 0.03 per 10 shares, ex-date September 26, 2025. 2026 interim distribution: RMB 0.05 per 10 shares, proposed. The company has made 19 cash distributions totaling approximately RMB 1.802 billion and raised approximately RMB 17.49 billion in cumulative financing, according to Eastmoney F10.

4.6 Other: No Formal Company Share-Buyback Announcement Found; No Other Major Regulatory/Policy or M&A Announcements in September 2026 Were Identified

No formal company-level share-buyback announcement, including buyback cancellation or buyback plan, was identified. An individual Eastmoney Caifuhao post dated June 11, 2026 discussed the absence of a buyback-cancellation plan, but it represents a retail-investor view and is not authoritative or treated as a company announcement. The post’s references to “Three Gorges,” “selling at RMB 15/buying at RMB 28” and “RMB 26.6 billion in cash” could not be cross-verified and conflict with the known controlling-shareholder name; they have been excluded. No other major regulatory, policy or M&A announcements in September 2026, apart from the private placement, stock-option incentive and interim report, were identified.

4.7 Uncertainties and Timeliness

1. Timeliness: The latest visible data are from approximately mid-September 2026, with market data through September 11, 2026 and a reference price near RMB 68. If the actual current date is later, this report does not cover announcements after September 11 and the latest exchange disclosures should be used.

2. Private placement not yet effective: The RMB 6.5 billion private placement still requires state-owned-assets approval, shareholder approval, SSE review and CSRC registration. Final size, price and investors may change; it remains a proposal rather than an accomplished fact.

3. Single-source data: The 22.53% subscription by Panshi Runqi and lock-up information are consistent across Securities Times, NBD and SSE announcements and are considered reliable. However, the upper-level shareholder background of Panshi Runqi was not verified against authoritative sources and is not asserted here. Historical claims regarding the controlling shareholder, including whether it was previously China Electronics or another state-owned capital entity, were not confirmed in this search.

4. Market capitalization and price data: The RMB 127.532 billion market capitalization on September 3 and prices near RMB 68 come from financial-media reports and were not independently verified through a market-data interface; they change with each trading day.

5. The interim-report figures of RMB 19.527 billion revenue and +4.96%, together with the 1Q/2Q breakdown, are consistent across multiple media outlets and broker reports, including Zhongyuan Securities dated 2026-09-01, and are considered reliable. However, the full original interim announcement was not directly retrieved in this search; item-level details should be checked against the original SSE announcement if necessary.

6. Security identification: 600584 is Jiangsu Changdian Technology Co., Ltd. (JCET Group Co., Ltd.; former English name Jiangsu Changjiang Electronics Technology), listed on the SSE Main Board and principally engaged in integrated-circuit packaging and testing, or one-stop final chip manufacturing services. It has eight production bases in China, South Korea and Singapore and ranked third globally and first in mainland China by OSAT revenue in 2025, according to the Chipsight Research Institute. Other JCET-related companies also appear in search results; the match has been confirmed using the company’s full name and exchange.

5. Share-Price Performance and Technical Analysis

5.1 Price Overview

5.2 Technical Indicators

5.3 Short-Term Outlook (Next Week; Scenario Analysis for Reference Only)

6. Industry Structure and Competitor Analysis

6.1 Industry Status

The global OSAT industry is highly concentrated, with the top three players holding a combined share of approximately 50% or more: ASE Technology, Amkor and JCET. JCET is the world’s third-largest and mainland China’s largest OSAT. Its 2025 revenue reached a record RMB 38.871 billion, maintaining its position as the global third-largest and mainland China’s largest packaging and testing company (sources: EET China and Tencent Cloud Developer Community reprint). The industry’s largest current variable is the advanced-packaging capacity-expansion race driven by AI computing.

6.2 Competitive Landscape

• The global OSAT market is highly concentrated, with the top three players holding a combined share of approximately 50% or more: ASE, Amkor and JCET.
• JCET is the world’s third-largest and mainland China’s largest OSAT. Its 2025 revenue reached a record RMB 38.871 billion, maintaining its global third and mainland China first rankings (sources: EET China and Tencent Cloud Developer Community reprint).
• Market-share figures should be treated cautiously. A self-media article gave ASE approximately 26%, Amkor 14% and JCET 12.2% in 2025. These figures appeared only in self-media and were not found in original reports from authoritative third parties such as TrendForce or Yole; they should be used only as reference and not formally cited.
• Key competitive assessment: JCET’s relative strengths are the breadth of its technology platforms, global customer coverage and overseas capacity in South Korea and Singapore. Its relative weakness is lower gross margin; ASE and Amkor have historically achieved higher margins in high-end packaging and testing services.
• The largest variable is the AI-computing-driven advanced-packaging expansion race. Major manufacturers, including JCET, are increasing capital expenditure. JCET’s 2025 capex was approximately RMB 10 billion, according to the title of a Kaiyuan Securities report, “RMB 10 billion capex establishes growth momentum.” A Securities Star article also warned that concentrated industry expansion could intensify competition and create future overcapacity risk.

6.3 Key Competitors

The quantitative comparison data for ASE, Amkor, Tongfu Microelectronics, Huatian Technology and Yongsi Electronics—including revenue, gross margin and customer concentration—could not be obtained from sources that could be cross-verified. Only JCET’s 48.80% customer-concentration figure is official. Tongfu Microelectronics’ “approximately 70% top-five customer concentration” comes from a Toutiao self-media article and has not been verified; it should not be cited directly. Further research should review the 2025 annual reports of Tongfu Microelectronics (002156), Huatian Technology (002185) and Yongsi Electronics (688362), especially their top-five customer and gross-margin data, to construct a rigorous peer comparison. JCET’s relative strengths are technology-platform breadth, global customer coverage and overseas capacity; its relative weakness is lower gross margin.

7. Risk Factors

• Earnings are highly sensitive to raw-material costs. Packaging materials’ share of chip packaging and testing costs rose from 63.34% in 2019 to 68.65% in 2025. Higher prices for substrates, lead frames, gold wire and molding compounds could further compress the company’s already thin 13%–15% gross margin. Some data attribute the 2025 profit decline to higher bulk-commodity and precious-metal prices.
• Customer concentration is relatively high and downstream bargaining power is limited. The top five customers accounted for RMB 18.969 billion, or 48.80% of revenue, in 2025. The company faces annual pricing pressure from IC design companies, fabless companies and foundries. Changes in core-customer orders, product cycles or pricing terms could affect revenue and profit.
• Advanced packaging and new capacity face risks of lower-than-expected returns and slower ramp-up. The company plans to raise no more than RMB 6.5 billion for high-performance-computing advanced packaging, power modules, wafer-level packaging and memory packaging and testing. It also plans to invest RMB 7.8 billion in a high-end advanced packaging and testing plant in Shanghai Lingang. If customer certification, project introduction or utilization improvement progresses more slowly than expected, depreciation, finance expenses and fixed costs could weigh on profit.
• The private-placement plan has not yet been implemented, creating uncertainty over approval, issuance size, issue price and timing. It requires state-owned-assets approval, shareholder approval, SSE review and CSRC registration. If the final issuance expands the share count, EPS could be diluted. Moreover, RMB 1.9 billion of the proceeds is intended for working capital and bank-loan repayment, and the use-of-proceeds structure requires continued monitoring.
• The business mix remains exposed to communications and consumer-electronics cycles. Communications-electronics revenue declined 12.18% year on year in 2025, while communications and consumer electronics together represented approximately 60% of revenue. If recovery in these businesses is weaker than expected, growth in computing and automotive electronics may not fully offset pressure on traditional businesses.
• Current valuation and share-price volatility are high. As of September 11, 2026, TTM P/E was approximately 62.51x and forward P/E approximately 71.76x. The share price had fallen approximately 40.5% from its 52-week high, while 20-day and 60-day returns remained -15.21% and -19.52%, respectively. Institutional target prices and earnings forecasts vary substantially. If advanced-packaging volume ramp-up or earnings improvement falls short of expectations, valuation could contract further.
• The 79.41% year-on-year increase in 1H26 net profit contains a low-base effect. Attributable net profit was only RMB 471 million in 1H25. The current high growth rate should not simply be extrapolated as a long-term growth rate. Subsequent quarters must confirm whether profit growth comes from sustained product-mix improvement and operating-efficiency gains rather than base effects.

8. Conclusion and Outlook

JCET’s medium-term growth thesis consists primarily of three components: rising demand for computing electronics and AI-related advanced packaging; expansion of high-value-added businesses such as automotive electronics and industrial and medical applications; and the completion of customer certification, ramp-up and volume production at JCET Microelectronics, wafer-level packaging facilities and the Lingang automotive-electronics plant. In 1H26, profit growth significantly exceeded revenue growth and gross margin increased 1.68 percentage points year on year, indicating that product-mix improvement and recovering capacity utilization have begun to show results.

The key factors determining whether earnings improvement can continue are the pace of advanced-packaging revenue-share expansion, recovery in communications and consumer electronics, utilization and depreciation dilution at new capacity, and changes in raw-material prices and finance expenses. The consensus forecast from 20 institutions on Eastmoney calls for attributable net profit of RMB 2.103 billion, RMB 2.719 billion and RMB 3.322 billion in 2026–2028, respectively. However, institutional forecasts and valuation views differ substantially, and the high year-on-year profit growth in 2026 is affected by a low base. The outlook should therefore be assessed dynamically against actual quarterly earnings and cash-flow delivery.

Data Sources

• JCET (600584)_Stock Overview_Stock Price_Real-Time Quotes_Chart_News_Research_FinScope-AI Makes Investing Simpler
• JCET (600584) Weekly Review: Up 0.56% This Week; Main Funds Recorded Net Outflows of RMB 913 Million—Securities Star
• JCET (600584) September 11: Main Funds Recorded Net Sales of RMB 397 Million—Securities Star
• 600105 Yongding Co., Ltd.
• Optical and Electrical Co., Ltd. (600184)_Company Announcements_2025 Interim Report—Sina Finance
• 600764 China Marine Defense
• JCET Group 600584 Stock Price
• JCET Group | 600584 CH - Announcements - Filings
• JCET Group Co., Ltd. (600584.SS) Stock Price, News, Quote and History—Yahoo Finance
• JCET Group Co Ltd Class A (600584)
• 600584 JCET
• JCET (600584): High-Value-Added Business Upgrade Takes Hold; Profitability Expected to Recover Gradually—9F Investment
• JCET (600584.SH) In-Depth F9-PC_HSF9 Data
• JCET (sh600584)
• JCET Fell 4%—What Happened?
• JCET (sh600584)
• JCET (600584)_Company Profile—CFi.cn
• Macroeconomic Research Details
• 600584 JCET—Main Business Scope
• JCET (600584): Computing and Automotive Electronics Build Growth Engines
• JCET’s 2025 Attributable Net Profit Fell 2.8% to RMB 1.57 Billion
• JCET (600584) 2025 Annual-Report Review: Strong Computing-Electronics Growth; Accelerating High-End Advanced-Packaging Deployment
• RMB 38.87 Billion! JCET Revenue Sets Another Record, Ranking Third Globally
• JCET (600584): 2025 Revenue Up 8%; Computing Electronics Up 42.6%
• JCET (600584): Revenue Hits Record High; RMB 10 Billion Capex Establishes Growth Momentum
• JCET’s 2025 Attributable Net Profit Fell 2.8% to RMB 1.57 Billion—Caizhongshe
• RMB 38.87 Billion! JCET Revenue Sets Another Record and Remains Third Globally
• 2025 Revenue Up 8%; Computing Electronics Up 42.6%
• RMB 38.87 Billion! JCET Revenue Sets Another Record and Remains Third Globally
• RMB 38.87 Billion! JCET Revenue Sets Another Record—Community Column
• JCET: 2022 Net Profit RMB 3.231 Billion, Up 9.20%
• JCET PBBand
• JCET (600584.SH) Is the World’s Third-Largest and China’s Largest Semiconductor Packaging and Testing Company
• JCET (600584.SH): Review of Public Information and Industry Observations
• China’s Semiconductor Packaging and Testing Leader JCET: How It Maintains Its Global Third Ranking
• JCET (600584) Main Business Analysis—Chaguwang
• JCET: 2018 Annual Report
• JCET (600584) Main Business Analysis—Chaguwang
• JCET: 2017 Annual Report—Sina Finance
• China Investor-Relations Interactive Q&A Platform—JCET
• JCET—Testing
• JCET: 2023 Annual Report
• JCET: 2021 Annual Report
• JCET: 2019 Annual Report
• Semiconductor In-Depth Research: JCET—Continuous Gross-Margin Improvement; Profits Expected from Semiconductor Packaging Leader
• Semiconductor Upstream Packaging and Raw-Material Price Increases
• JCET: CICC Independent Financial Adviser Report
• JCET: 2022 Annual Report
• JCET: Low-Gross-Margin Difficulties Remain; Concerns over Advanced-Packaging Expansion
• JCET (600584.SH) In-Depth F9-PC_HSF9 Data
• JCET Listed-Company Information
• JCET: RMB 68.95, +0.45%
• JCET: RMB 38.82, +1.38%
• JCET Group Co Ltd, 600584:SHH.SH Profile
• Profit Growth and Gross-Margin Divergence among Three Packaging and Testing Companies in 1H
• JCET RMB 67.74 -0.38 (-0.56%)—Eastmoney
• JCET (600584) Research Reports
• JCET Stock Overview
• JCET (600584) Income Statement—Investing.com
• Sina Finance Article
• JCET Group Co., Ltd. Reports Results for Fourth Quarter Ended December 31, 2025
• Korean JCET Company Information
• SDIC Securities: Maintain Buy-A Rating on JCET
• JPMorgan Raises JCET Rating from Neutral to Overweight, Target Price RMB 110
• Huatai Securities Gives JCET a Buy Rating
• Huatai Securities Gives JCET a Buy Rating
• JCET Analyst Consensus Estimates
• Guolian Minsheng Gives JCET a Recommend Rating
• Goldman Sachs Warns JCET Could Fall Another 30%
• Sina Finance Article
• JPMorgan: Advanced Packaging Fully Accelerating; JCET Target Price Raised
• Sina Finance Article
• Research Report Indicator Feed
• JCET 2025 Annual-Report Review
• JCET: High-End Packaging Positioned for “AI Four Forces”
• Company Information Update: Record Revenue; RMB 10 Billion Capex Establishes Growth Momentum
• Company Information Update: High-End Packaging Positioned for the “AI Four Forces”
• JCET Earnings Forecast
• JCET: Computing and Automotive Electronics Lead Growth
• JCET: Computing and Automotive Electronics Lead Growth
• JCET: AI-Computing Packaging Deployment Deepens
• JCET Market Data
• JCET Stock Overview
• JCET RMB 68.64 +0.04%
• JCET (600584.SH)
• JCET Key Information
• JCET Fast Quote
• Market Data
• JCET Market Data
• Announcement on Results of Grant under JCET’s 2025 Stock-Option Incentive Plan
• JCET Dividends and Financing
• JCET Announces Record Annual Revenue and Higher Pre-Tax Profit
• JCET Announces 2025 Annual Report
• JCET Announces 2025 Annual Report
• JCET
• JCET Reports Financial Results for the First Nine Months of 2025
• JCET: Announcement on Results of Grant under 2025 Stock-Option Incentive Plan
• JCET Stock Quotes—CFi.cn
• JCET Launches RMB 6.5 Billion Private-Placement Plan for Four Plants and Working Capital
• JCET: Announcement Regarding No Penalties or Regulatory Measures in the Past Five Years
• JCET to Raise No More Than RMB 6.5 Billion through A-Share Issuance to Specific Investors
• JCET Launches RMB 6.5 Billion Private-Placement Plan
• JCET Announcement on Related-Party Transaction and Conditional Share-Subscription Agreement
• Packaging and Testing Leader Plans RMB 6.5 Billion Private Placement
• JCET Plans RMB 6.5 Billion Private Placement for Advanced-Packaging Capacity
• JCET 2026 A-Share Issuance Plan to Specific Investors
• JCET Ninth Board Fifth Extraordinary Meeting Resolution
• JCET Announcement Regarding No Penalties or Regulatory Measures in the Past Five Years
• JCET: AI-Driven Computing-Electronics Growth
• JCET: 1H26 Non-GAAP Attributable Net Profit Up 84.7%
• JCET: 1H Net Profit Up 79.41%; Proposed RMB 0.05 Dividend per 10 Shares
• JCET 1H Net Profit RMB 845 Million, Up 79.41%
• JCET: 1H Non-GAAP Net Profit Up 84.7%
• A-Share Packaging and Testing Leader’s Net Profit Surges 79%
• JCET: 1H Net Profit Up 79.41%; Proposed RMB 0.05 Dividend per 10 Shares
• JCET: 1H Net Profit Up 79.41%; Proposed RMB 0.05 Dividend per 10 Shares
• JCET: 1H26 Net Profit Up 79.41%; Proposed RMB 0.05 Dividend per 10 Shares
• JCET Has No Buyback-Cancellation Plan
• JCET RMB 67.74 -0.56%
• Jiangsu Changdian Technology Co., Ltd. 600584
• JCET RMB 74.93 -1.61 (-2.10%)
• 600584 JCET—MSN Finance
• JCET Technical Analysis
• JCET Interactive Chart
• JCET (SH:600584)
• JCET Stock Overview
• JCET (600584.SH)—US Stocks
• JCET Technical Analysis
• JCET—Company Analysis
• JCET Fast Quote
• JCET Real-Time Price
• JCET RMB 68.64 +0.06%
• JCET September 11: Main Funds Recorded Net Sales of RMB 397 Million
• JCET Fund Flows
• JCET Fell 2.03%; Turnover RMB 911 Million
• JCET Intraday Market Movements
• JCET Rose 2.00%; Turnover RMB 2.033 Billion
• JCET’s 5.49% Plunge on September 4
• JCET Fund Flows
• JCET (600584.SH)
• JCET Quote—etnet

This report was automatically researched, compiled and generated by AI based on publicly available sources. Information is current through the September 11, 2026 close (Friday, the most recent trading day; September 12, 2026 was Saturday, with no trading) and may differ in timeliness. Specific data should be verified against the company’s formal announcements and authoritative data terminals. This report is for information organization and research reference only and does not constitute investment advice. Investors should make independent judgments and bear their own investment risks.