Zhongji Innolight Co., Ltd. (300308)

Equity Research Report　|　Industry: High-Speed Optical Communications Transceiver Module Manufacturing　|　Report Date: September 14, 2026　|　As of the September 14, 2026 close; the September 14 closing price, change and valuation data are mainly sourced from Lixinger, while some market data have not yet been fully cross-verified across multiple platforms; Bollinger Band data are as of September 8, 2026.

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

1. Executive Summary

Zhongji Innolight generated revenue of RMB 41.778 billion in 1H 2026, up 182.49% year on year; net profit attributable to the parent was RMB 13.651 billion, up 241.70%, while non-GAAP net profit attributable to the parent was RMB 13.092 billion, up 229.32%. Growth in shipments of high-end optical modules, product mix optimization and improved operating efficiency were the main drivers. However, net cash flow from operating activities was only RMB 1.7997 billion during the same period, down 44.08% year on year and significantly weaker than the growth in revenue and profit. The divergence between earnings realization and cash-flow quality is currently the most decision-relevant point to monitor.

The company’s business is highly concentrated in high-speed optical communications transceiver modules. This business accounted for 95.91% of revenue in 2024, with AI data centers as the core growth source. The strong growth in 1H 2026 reflects volume ramp-up in 800G and 1.6T products and robust industry conditions. The company has capabilities in scaled manufacturing, customer certification, global delivery and rapid mass production. However, its top five customers accounted for 74.74% of sales in 2024, while the US accounted for approximately 60.5% of total revenue. Customer concentration, reliance on overseas markets and the pace of North American capital expenditure therefore have a significant impact on results.

As of September 14, 2026, the company’s share price closed at RMB 873, with a PE-TTM of approximately 50.28x and PB of approximately 25.80x. The closing price was below MA5, MA10, MA20 and MA200; RSI was 42.515, while StochRSI and Williams %R indicated short-term oversold conditions. The technical picture therefore shows weak prices but potential for a technical rebound. Current valuation already incorporates high growth expectations, while market forecasts for 2027–2028 earnings vary considerably. Subsequent earnings growth, product iteration and cash-flow performance will determine the pace of valuation digestion.

The company launched a share repurchase program of RMB 4 billion to RMB 8 billion in September 2026. Based on publicly disclosed data, cumulative repurchases were roughly estimated at RMB 2.820 billion as of September 11. However, the repurchased shares are currently held mainly as treasury shares and have not directly resulted in share cancellations. In addition, the company plans to acquire a 10.47% stake in Zhongshi Technology for approximately RMB 1.747 billion. The share transfer has not yet been completed. The company also plans to provide no more than RMB 51 million in financial assistance to loss-making subsidiary Shenzhen Deepcool, and the efficiency of capital utilization and the results of industrial-chain synergies remain to be verified.

2. Company Overview

2.1 Basic Information

2.2 Core Businesses and Product Portfolio

• Optical communications transceiver modules: 2024 revenue of RMB 22.886 billion, accounting for 95.91% of revenue, up 124.77% year on year, with a gross margin of 34.65%. Products cover 100G, 200G, 400G, 800G and 1.6T, including 800G OSFP, 800G QSFP-DD, 400G QSFP-DD, 400G OSFP, 100G QSFP28, silicon photonics, LPO and coherent optical modules.
• Automotive optoelectronics: 2024 revenue of RMB 762 million, accounting for 3.19% of revenue, up 128.11% year on year.
• Optical components: 2024 revenue of RMB 214 million, accounting for 0.90% of revenue, up 6.18% year on year.
• Application areas include cloud-computing data centers and AI data centers, data communications networks, 5G wireless networks, telecom transmission networks, fixed-line access and FTTx, as well as emerging businesses such as automotive optoelectronics.

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

Zhongji Innolight operates in the middle of the optical communications value chain and is essentially a high-speed optical module manufacturer. It conducts R&D, design, packaging, testing and sales, integrating optical chips, electronic chips, optical devices, PCBs and structural components into optical transceiver modules that can be installed in switches, servers or communications equipment. Optical communications transceiver modules accounted for 95.91% of revenue in 2024, making high-speed optical modules for AI data centers the company’s most important growth source.

• Major purchases include optical devices and optical chips; DSP, Driver, TIA and other integrated-circuit chips; TOSA transmitter assemblies; ROSA receiver assemblies; PCBs and other electronic components; structural parts; connectors; thermal-management materials and auxiliary materials; as well as electricity required for production. TOSA generally includes VCSEL, DFB and EML laser chips, while ROSA generally includes APD and PIN detector chips.
• Optical chips account for a relatively high proportion of costs. EMLs at speeds of 50G and above still rely heavily on imports. Domestic supply chains for DFB, PIN, VCSEL, FP and APD products at 10G and below are relatively mature, while some domestic manufacturers can supply EMLs at 10G–25G in volume.
• The company has strong competitiveness in packaging, testing, manufacturing scale, customer certification and product design. However, it remains externally dependent on certain high-end optical chips, core electronic chips and high-performance optical devices. It is not a complete price setter for upstream costs, and some key materials are closer to being price-taker inputs.
• Purchases from the top five suppliers totaled RMB 8.339 billion in 2024, accounting for 50.96% of annual purchases. The company did not disclose suppliers’ actual names and instead identified them as Suppliers A to E. It is therefore impossible to determine which specific chips or devices correspond to any individual supplier or to confirm the irreplaceability of any supplier’s technology. The data come from the company’s annual report, but supplier names were not disclosed.
• Downstream customers mainly include large global cloud-computing and internet companies, AI data-center and server manufacturers, domestic and overseas communications-equipment manufacturers, telecom-operator supply-chain companies and automotive-electronics customers.
• Sales to the top five customers totaled RMB 17.836 billion in 2024, accounting for 74.74% of annual sales. The top three customers accounted for 22.43%, 21.30% and 18.77% of total revenue, respectively, or approximately 62.50% in aggregate. The company did not disclose customers’ actual names and identified them only as Customers A to E. The concentration data are for 2024, and customer identities cannot be directly confirmed from the annual report.
• Customers generally require suppliers to pass supplier certification, product-code certification and reliability testing. New-product introduction and supplier switching involve certification periods and replacement costs, giving leading suppliers a degree of customer stickiness.
• The company’s products are important core components of switches, servers and communications equipment, but optical modules retain a degree of standardization. When dealing with a small number of global cloud providers, customer purchasing scale, product generation, competitors’ quotations and upstream chip costs affect prices, and the company does not possess absolute pricing power.
• The company has a high proportion of overseas revenue, with the US accounting for approximately 60.5% of total revenue. Business conditions are closely linked to capital expenditure by North American cloud providers and the pace of AI data-center construction. The company also faces trade-policy and geopolitical risks.
• As of December 31, 2024, the book balance of accounts receivable was RMB 4.677 billion, equivalent to approximately 19.6% of 2024 revenue and up approximately 77.4% from the end of 2023. Based on average accounts receivable at the end of 2023 and 2024, rough days sales outstanding were approximately 5.6 days; this is not an officially disclosed company metric. Accounts receivable due within one year totaled RMB 4.600 billion, or approximately 98.4% of the balance. Accounts payable were RMB 2.991 billion and notes payable RMB 517 million, totaling approximately RMB 3.508 billion; prepayments were RMB 80 million. The top five suppliers accounted for 50.96% of purchases, indicating that the company can use a certain amount of trade credit to offset part of its procurement-related working-capital needs, although high-end chip and device suppliers may not be equally dependent on the company’s payment terms.
• Value-chain concentration is polarized at both ends. The top five customers accounted for 74.74% of sales in 2024 and the top three accounted for approximately 62.50%, indicating relatively high downstream concentration and bargaining pressure from customers in terms of purchasing scale and order allocation. The top five suppliers accounted for 50.96% of purchases, but supplier names were not disclosed, making it impossible to judge the technological irreplaceability of any individual supplier. The above customer and supplier concentration data are for 2024, and both customers and suppliers are identified by A–E codes. The latest annual report should be consulted for the most up-to-date information.

The company is positioned in the middle of the optical communications value chain and is a global manufacturing leader centered on high-end high-speed optical modules. It is neither a resource or chip company primarily producing upstream optical chips nor a downstream operator with end-brand pricing power. Further margin expansion will mainly depend on mix upgrades toward high-end products such as 400G, 800G and 1.6T, scaled manufacturing, yield improvement and cost control, rather than upstream resource monopolies or downstream end-brand premiums.

3. Financial Data and Valuation Analysis

3.1 Recent Operating Performance

2Q 2026 data were back-calculated from 1Q 2026 and 1H 2026 cumulative data and were not separately disclosed by the company. Non-GAAP net profit attributable to the parent in 1H 2026 was RMB 13.092 billion, up 229.32% year on year; basic EPS was RMB 12.31, up 238.19%; weighted-average ROE was 37.62%, up 18.78 percentage points from the same period last year. Net cash flow from operating activities in 1H 2026 was RMB 1.800 billion, down 44.08% year on year. As of June 30, 2026, total assets were RMB 68.942 billion, net assets attributable to shareholders of the listed company were RMB 39.859 billion, and the debt-to-asset ratio was approximately 36.08%. Non-GAAP net profit attributable to the parent in 2025 was RMB 10.710 billion, up 111.31% year on year; basic EPS was RMB 9.80; and net cash flow from operating activities was RMB 10.896 billion, up 244.31% year on year.

Revenue and profit grew rapidly in 1H 2026, with non-GAAP net profit attributable to the parent accounting for approximately 95.9% of reported net profit attributable to the parent. Profit growth mainly came from the core business. Growth in shipments of high-end optical modules such as 800G and 1.6T, product-mix optimization and improved operating efficiency were the main drivers. However, operating cash flow was only RMB 1.800 billion and declined 44.08% year on year, significantly below net-profit growth. Attention should be paid to the impact of inventory, accounts receivable and capacity-building investment on working capital and cash flow.

3.2 Earnings Forecasts

Institutional forecasts were collected around September 10, 2026, mainly from the consensus summary of forecasts from 30 institutions over the past six months on Tonghuashun and from selected publicly available institutional research reports. They are not company guidance. The broad forecast ranges for 2027–2028 reflect substantial market disagreement over the ramp-up pace and profitability of products such as 1.6T, 2.4T and NPO/CPO. Forecasts from individual institutions such as Goldman Sachs and BofA Securities are notably optimistic and should not be treated directly as market consensus.

3.3 Valuation and Institutional Ratings

As of September 11, 2026, the company’s closing price was RMB 926.00, up 4.03%, with total market capitalization of approximately RMB 1,090.74 billion and free-float market capitalization of approximately RMB 1,027.80 billion. Different data sources show a PE-TTM of approximately 51–53x, non-GAAP PE of approximately 55.02x and PB of approximately 25–27x. Lixinger reported a PE-TTM of approximately 51.26x, a historical percentile of approximately 48.48%, a 20th percentile of approximately 30.78x, a median of approximately 52.04x and an 80th percentile of approximately 74.48x. Based on the average EPS forecasts from 30 institutions and the RMB 926 closing price, simple calculations imply 2026E, 2027E and 2028E PEs of approximately 32.2x, 17.7x and 12.4x, respectively. This calculation does not consider subsequent changes in share capital and is not company guidance. The implied forward valuations under selected institutional forecasts are approximately 31.4x, 17.1x and 11.4x for Industrial Securities in 2026–2028; 31.5x, 16.7x and 12.4x for Guosheng Securities; and 30.3x, 12.2x and 8.0x for TF Securities. The company’s current spot or TTM valuation is not low, but if institutional earnings forecasts are achieved, forward PE would decline rapidly as profits grow. Market target-price samples range from approximately RMB 1,325 to RMB 2,645. Investing.com’s aggregated average 12-month target price is RMB 1,392.11, with a high of RMB 2,645 and a low of RMB 430. However, the number of analysts and ratings included is subject to inconsistent statistical definitions, so the average target price is for reference only. Key risks include broad disagreement over 2027–2028 earnings forecasts, operating cash flow lagging net-profit growth, working-capital usage by inventory and accounts receivable, capital-expenditure requirements, and uncertainty arising from overseas customers, AI data-center capital-expenditure cycles, foreign exchange, trade policy and high-end optical-module prices.

4. Recent News and Announcements

4.1 Company Launches Large Share Repurchase Program; Cumulative Repurchases Approximately RMB 2.820 Billion

On August 31, 2026, the fourth meeting of the sixth session of the Board of Directors of Zhongji Innolight approved a share repurchase proposal. The company disclosed the repurchase plan and report on September 1, 2026. It plans to repurchase A shares using its own funds or self-raised funds, with a total amount of no less than RMB 4 billion and no more than RMB 8 billion, at a price of no more than RMB 1,200 per share, within 12 months from the date of board approval. At RMB 1,200 per share, the repurchase is expected to cover 3.3333 million to 6.6667 million shares, representing approximately 0.28% to 0.57% of the company’s combined A- and H-share capital as of August 31, 2026. The repurchased shares are intended for an employee stock ownership plan or equity incentive plan. Any portion not used within 36 months after completion will be cancelled in accordance with applicable law. As of September 11, 2026, a rough aggregation of publicly disclosed daily data indicated cumulative repurchases of approximately 3.2551 million shares for total consideration of approximately RMB 2.820 billion. This amount is an estimate, and the company’s subsequent formal repurchase progress announcements shall prevail.

4.2 Repurchase Progress Is Relatively Fast; No Direct Share Cancellation Yet

The company continuously conducted repurchases from September 1 to September 11, 2026: 374,100 shares for RMB 318.4 million on September 1; approximately 358,400 shares for approximately RMB 295 million on September 2; approximately 233,100 shares for approximately RMB 190 million on September 3; 619,600 shares for approximately RMB 510 million on September 4; approximately 436,500 shares for approximately RMB 395 million on September 8; 239,022 shares for RMB 216,999,975.62 on September 9; 666,195 shares for approximately RMB 597 million on September 10; and 328,200 shares for RMB 297,857,743 on September 11. Based on the RMB 4 billion lower limit, approximately 70.5% had been completed as of September 11; based on the RMB 8 billion upper limit, approximately 35.3% had been completed. The repurchased shares are currently held mainly as treasury shares and have not directly resulted in cancellation or an immediate change in share capital. The subsequent impact on EPS and share capital will depend on the implementation of the employee stock ownership or equity incentive plan.

4.3 Actual Controller Adds and Releases Pledges; Overall Pledge Ratio Remains Low

On September 2, 2026, the company disclosed that actual controller Wang Weixiu pledged 553,000 shares to China Merchants Securities on August 31, 2026, and 175,000 shares to Huatai Securities on September 1, for a total of 728,000 shares. These represented 1.04% of his holdings and approximately 0.06% of the company’s total share capital, and were used to repay debt. As of September 1, 2026, Wang Weixiu had cumulatively pledged 2,078,000 shares, representing 2.98% of his holdings; Zhongji Holdings had cumulatively pledged 4,600,000 shares; and Wang Weixiu and parties acting in concert had cumulatively pledged 6,678,000 shares, representing 3.45% of their combined holdings. On September 4, 2026, the company disclosed that Wang Weixiu had released a pledge over 1,350,000 shares. As of September 3, Wang Weixiu and parties acting in concert had cumulatively pledged 5,328,000 shares, representing 2.76% of their combined holdings.

4.4 Controlling Shareholder Releases Pledge; Specific Shareholder Both Adds and Releases Pledges

On September 8, 2026, the company disclosed that controlling shareholder Shandong Zhongji Investment Holding Co., Ltd. had released a pledge over 2,000,000 shares. As of the announcement date, Zhongji Holdings had cumulatively pledged 2,600,000 shares, representing 2.14% of its holdings; Zhongji Holdings, Wang Weixiu and Wang Xiaodong had cumulatively pledged 3,328,000 shares, representing 1.72% of their combined holdings. On the same day, Suzhou Yixingfu Enterprise Management Center (Limited Partnership) newly pledged 1,048,000 shares, including 700,000 shares to CITIC Securities and 348,000 shares to Huatai Securities; an additional 200,000 shares were released from pledge on September 7, 2026. Following the transactions, Yixingfu had cumulatively pledged 8,902,000 shares, representing 19.09% of its holdings; Yixingfu and parties acting in concert had cumulatively pledged 12,432,000 shares, representing 13.03% of their combined holdings. The overall pledge ratio of the controlling shareholder and actual controller is not high, but Yixingfu’s pledge ratio as a single entity is relatively high. Attention should be paid to subsequent supplemental pledges, forced-liquidation risk and changes in shareholder funding arrangements.

4.5 Company Plans to Provide No More Than RMB 51 Million in Financial Assistance to Controlling Subsidiary Shenzhen Deepcool

On September 4, 2026, Zhongji Innolight disclosed plans to provide no more than RMB 51 million in financial assistance to its controlling subsidiary Guangdong Shenzhen Deepcool Technology Co., Ltd. in the form of a loan, at an annual interest rate of 2.70% and with a term of 12 months. The funds will come from its own funds or self-raised funds and will mainly be used for Deepcool’s production and operations. Zhongji Innolight owns 51% of Deepcool, which is included in consolidated financial statements. As of June 30, 2026, Deepcool had total assets of RMB 95.7151 million, total liabilities of RMB 23.6291 million and equity of RMB 72.0860 million. In 1H 2026, it generated revenue of RMB 17.3751 million and recorded a net loss of RMB 19.2409 million. Guangdong Dongyangguang Liquid Cooling Technology Co., Ltd., which owns 49% of Deepcool, plans to provide no more than RMB 49 million in financial assistance at the same interest rate, subject to internal approval and therefore subject to uncertainty. The transaction does not constitute a material asset restructuring and, according to the company’s disclosure, does not require review by the board or shareholders’ meeting.

4.6 Company Plans to Acquire 10.47% of Zhongshi Technology; Share Transfer Not Yet Completed

On August 13, 2026, Zhongji Innolight signed a share-transfer agreement with Wu Xiaoning, Ye Lu and HAN WU, the controlling shareholders of Beijing Zhongshi Weiye Technology Co., Ltd. The company plans to acquire 31,372,504 unrestricted shares of Zhongshi Technology for cash, representing 10.47% of Zhongshi Technology’s total share capital, at RMB 55.70 per share. The total consideration is RMB 1,747,448,473, or approximately RMB 1.747 billion. Upon completion, Zhongji Innolight will become a shareholder holding more than 5% of Zhongshi Technology. Funding will come from its own funds or self-raised funds, and the main purpose is to strengthen industrial-chain synergies in advanced thermal management, functional materials and related areas. The transfer remains subject to compliance review by the Shenzhen Stock Exchange and registration with the Shenzhen branch of China Securities Depository and Clearing Corporation Limited. As of September 14, 2026, no announcement confirming completion of the share transfer had been located. The transaction should therefore currently be treated as signed and in progress.

4.7 Strong 1H 2026 Growth Continues; Operating Cash Flow Declines Year on Year

The semiannual report disclosed on August 22, 2026, showed 1H 2026 revenue of RMB 41.778 billion, up 182.49% year on year; net profit attributable to shareholders of the listed company of RMB 13.651 billion, up 241.70%; and net cash flow from operating activities of RMB 1.7997 billion, down 44.08% year on year. These figures are from the disclosed semiannual report and do not constitute a new earnings forecast issued in September 2026, but they may provide background for the company’s accelerated repurchase activity and industrial-chain investment arrangements.

4.8 No New Earnings Forecast, Regulatory Inquiry or Major M&A Announcement Identified in September

As of September 14, 2026, searches using the keywords “Zhongji Innolight,” “300308,” “September 2026,” “earnings forecast,” “regulatory,” “inquiry,” “M&A” and “share reduction” had not identified any new earnings forecast, earnings flash, regulatory penalty, response to a regulatory inquiry or new major acquisition announcement issued by the company in September 2026. September announcements mainly concerned share repurchases, shareholder pledges and pledge releases, financial assistance to a controlling subsidiary and H-share repurchase disclosures. The company’s first repurchase announcement explicitly stated that the timing and trading arrangements complied with relevant rules, including the Shenzhen Stock Exchange Self-Regulatory Guidelines for Listed Companies No. 9.

5. Share Price Performance and Technical Analysis

5.1 Price Overview

5.2 Technical Indicators

As of September 14, 2026, Zhongji Innolight closed at RMB 873, down from the September 11 close of RMB 926. The stock had again fallen below MA5, MA10 and MA20 while remaining close to MA50 and MA100. MACD remained positive, RSI was below 50, and StochRSI and Williams %R indicated short-term oversold conditions. The technical picture was therefore divergent: prices were weak, MACD had not fully turned bearish, and a rebound was possible, but the trend had not been confirmed. Recent turnover was mainly between RMB 15.5 billion and RMB 30.0 billion, rising above RMB 35.0 billion when sentiment was active. The renewed decline on September 14 after a high-volume rebound on September 11 indicates that shareholding stability and buying support require further verification.

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

⚠️ Risk warning: The following content is a subjective scenario analysis based on market prices, historical prices, technical indicators and fund-flow data available as of September 14, 2026. It does not constitute investment advice or a guarantee of future actual performance.

① Key Technical Levels

② One-Week Scenarios (Subjective Weights, Not Statistical Probabilities)

• Range-bound consolidation (relatively higher subjective weight, approximately 60%; a heuristic judgment based on current technical and fund-flow conditions, not a statistical probability): price range of approximately RMB 850–900. Trigger conditions include support at RMB 850–872, turnover remaining within the recent normal range of approximately RMB 15 billion–28 billion, no significant deterioration in the sector or major negative company-specific news, and no effective breakout above RMB 900–902. The likely pattern could be a weak rebound after a sharp decline followed by renewed consolidation.
• Weak downside (medium subjective weight; a heuristic judgment, not a statistical probability): price range of approximately RMB 800–850. Trigger conditions include a confirmed break below the RMB 850–860 support band, daily turnover expanding above RMB 30 billion with the close near the low, simultaneous weakness in optical modules, CPO or computing-hardware sectors, and renewed consecutive net outflows from major funds. If this occurs, the next observation area would be RMB 800–820; a high-volume break below RMB 800 would further weaken the short-term technical structure.
• Strengthening rebound (relatively low subjective weight; a heuristic judgment, not a statistical probability): price range of approximately RMB 900–940. Trigger conditions include reclaiming RMB 880 and breaking above RMB 900–902 on increased volume, daily turnover remaining above the upper end of the recent normal range at approximately RMB 30 billion or more, consecutive net inflows from major funds, synchronized gains in optical modules, CPO or AI computing-hardware sectors, and a further break above MA200 near RMB 913. Without a corresponding increase in volume, a rebound above RMB 900 could still reverse after a spike.

③ Fund-Flow and Liquidity Background

Recent turnover was approximately RMB 15.5 billion–37.6 billion, with turnover ratios of approximately 1.56%–3.89%. Turnover was RMB 37.635 billion with a 3.89% turnover ratio on September 7, RMB 29.974 billion with a 2.95% turnover ratio on September 11, and RMB 15.491 billion with a 1.56% turnover ratio on September 10. The stock is large-cap and highly liquid, but its short-term volatility is relatively high. Shareholder-structure data as of June 30, 2026, showed that the top ten shareholders collectively held approximately 33.77%; Shandong Zhongji Investment Holding Co., Ltd., Wang Weixiu and other core controlling shareholders and concert parties collectively held approximately 24.19%. The number of shareholders increased approximately 33.20% from March 31, 2026. The top ten shareholders included the controlling shareholder, actual controller and employee/management platforms, as well as Hong Kong Securities Clearing Company, communications-equipment ETFs and securities firms or other financial accounts. Because shareholder data are reported quarterly and lagged, they cannot fully represent the actual shareholder structure in September 2026. Complete, cross-verifiable turnover and turnover-ratio data for September 14 had not been located, so no definitive statement is made.

If daily turnover subsequently remains above RMB 30 billion and the closing price holds above RMB 900–902, this could serve as an observation signal that the rebound has volume confirmation. If turnover expands but the price still closes below RMB 850, the move would be more indicative of high-volume position transfer or disagreement than confirmed upside momentum.

④ Key Points to Monitor (Observation Framework Only, Not Trading Instructions)

• Observe whether the RMB 850–860 strong-support zone produces a low-volume stabilization pattern; if it breaks on volume, monitor RMB 800–820.
• Observe whether the RMB 880–902 dense moving-average area can be reclaimed and whether turnover can remain above RMB 30 billion when the price trades above RMB 900.
• Observe whether major-fund flows shift from single-day inflows to sustained net inflows, and assess buying support alongside the performance of optical modules, CPO and AI computing-hardware sectors.
• The above is an observation framework, not a trading instruction.

The above scenario analysis is based on the September 14, 2026 closing data and calculations using historical prices and technical indicators. Short-term share prices may also be affected by news, fund flows, the broader market and other factors. Technical indicators have inherent lags and limitations. This does not guarantee future actual performance or constitute a buy or sell recommendation. Investors should make independent judgments based on the latest market information and bear investment risks themselves.

6. Industry Landscape and Competitor Analysis

6.1 Industry Status

The optical module industry is shifting from traditional telecom optical modules toward data centers and AI computing networks. The data-communications market has surpassed the telecom market and become the main source of growth. Demand for AI training, inference and data-center interconnection is driving 400G, 800G and 1.6T optical modules as the main technology-upgrade directions. Core areas of competition include high-speed product R&D, optical-chip and optical-device integration, high-speed signal integrity, thermal management, low-power design, new-product mass-production yield, automated manufacturing, customer certification, global delivery and quality management.

6.2 Competitive Landscape

• Data-center customers have raised their requirements for reliability, delivery capability and product iteration speed, increasing concentration among leading companies.
• Technology generations are changing rapidly. The industry is upgrading from 100G and 200G to 400G, 800G and 1.6T, and suppliers entering customer supply chains early are more likely to secure ongoing orders.
• Chinese manufacturers have strong scale and cost advantages in high-speed optical-module manufacturing. Zhongji Innolight, Eoptolink and Accelink are competing globally.
• Overseas manufacturers still control some upstream core-chip and device capabilities. Coherent and Lumentum have accumulated technological expertise in chips, devices and modules.
• Customer concentration and supply-chain security are common industry risks. Citing LightCounting rankings, the company’s annual report stated that Zhongji Innolight ranked first among global optical-module manufacturers in 2023. This ranking was cited from a third-party industry ranking in the company’s annual report; the original LightCounting report should still be obtained for cross-verification before formal use.

6.3 Major Competitors

Compared with Eoptolink, Zhongji Innolight’s advantages lie in business scale, product coverage and global manufacturing and delivery capabilities. Compared with Accelink Technologies and HGTECH, its business is more focused on high-speed optical modules and large overseas cloud data-center customers, although its degree of vertical integration is not the strongest. Compared with Innolight Technology, Zhongji Innolight has greater scale, stronger customer certification and more prominent mass-delivery capabilities. Compared with overseas manufacturers such as Coherent and Lumentum, its main competitive advantages are scaled manufacturing, cost control, rapid mass production and access to China’s supporting supply chain. The industry comparison includes some competitors’ 2024 data, all presented according to the research notes; no data not appearing in the notes have been added.

7. Risk Factors

• High customer concentration: Sales to the top five customers accounted for 74.74% of annual sales in 2024, and the top three accounted for approximately 62.50%. If core customers adjust purchasing volumes, product generations or supplier allocations, the company’s revenue and capacity utilization could be materially affected.
• Significant reliance on overseas and US revenue: Overseas revenue accounted for 86.81% of 2024 revenue, while the US accounted for approximately 60.5% of total revenue. Changes in North American cloud providers’ capital expenditure, trade policy and geopolitical factors could affect orders, delivery and revenue recognition.
• Operating cash flow lags profit growth: In 1H 2026, net profit attributable to the parent was RMB 13.651 billion, while net cash flow from operating activities was only RMB 1.7997 billion, down 44.08% year on year. Continued use of funds by accounts receivable, inventory and capacity construction could prevent profit growth from converting into cash at the same pace.
• External dependence on key upstream materials: Certain high-end optical chips, including EMLs at speeds of 50G and above, still rely heavily on imports. The company does not have complete pricing power over certain high-end optical chips, core electronic chips and high-performance optical devices. Supply constraints or higher procurement costs could compress margins and weaken delivery capabilities.
• Uncertainty in high-end product iteration and earnings forecasts: Future growth depends substantially on 800G, 1.6T and higher-generation products, but institutional forecasts for 2027–2028 revenue and net profit span a wide range. If new-product certification, mass-production yields or customer adoption fall short of expectations, earnings growth and valuation digestion could be below market expectations.
• High valuation and share-price volatility risk: As of September 14, 2026, PE-TTM was approximately 50.28x and PB approximately 25.80x. The share price fell 5.72% that day, and the closing price was below several short- and medium-term moving averages. If the market lowers its expectations for AI data-center conditions or the company’s earnings, valuation compression could amplify share-price volatility.
• Execution risks in industrial-chain investment and subsidiary operations: The proposed acquisition of a 10.47% stake in Zhongshi Technology for approximately RMB 1.747 billion has not yet been completed. Deepcool, the controlling subsidiary, recorded a net loss of RMB 19.2409 million in 1H 2026, and the company plans to provide no more than RMB 51 million in financial assistance. The resulting investment synergies and capital recovery remain uncertain.
• Limited immediate EPS impact from the repurchase: The repurchased shares are currently held mainly as treasury shares and have not been directly cancelled. They are intended for an employee stock ownership or equity incentive plan. If unused shares are cancelled in accordance with law after 36 months, or if implementation differs from expectations, the effect of the repurchase on share capital and EPS will vary.

8. Conclusion and Outlook

Zhongji Innolight’s growth thesis remains centered on expanding AI data-center and high-speed interconnection demand and the continued upgrade of high-end products such as 400G, 800G and 1.6T. Revenue and profit maintained high growth in 1H 2026, while non-GAAP profit accounted for approximately 95.9% of net profit attributable to the parent, indicating that profit growth during the period mainly came from the core business. The company is competitive in scaled manufacturing, customer certification and global delivery. If high-end products continue to ramp up and yield improvement and cost control are sustained, there remains room for further expansion in earnings scale.

Looking ahead, the sustainability of growth will depend on AI data-center capital expenditure, customer concentration, the pace of introduction of 1.6T and subsequent products, and the company’s ability to secure high-end chip and device supplies. The wide range of institutional earnings forecasts for 2026–2028 indicates substantial market disagreement over the pace of product ramp-up and profitability. At the current PE-TTM valuation of approximately 50x, earnings delivery, cash-flow improvement and valuation digestion should be monitored together.

The company’s strong fundamentals and weak short-term technical picture coexist. On September 14, the share price was within the RMB 850–900 observation range, with RMB 880–902 serving as a dense moving-average resistance zone and RMB 850–860 as an important support reference. Key items to track include the matching of operating cash flow with profit, accounts receivable and inventory usage, actual completion of the repurchase plan and subsequent use of the shares, and the impact of the Zhongshi Technology investment and Deepcool business on the allocation of resources to the core business.

Data Sources

• Zhongji Innolight (300308)_Listing Announcement Details_Zhongji Innolight: Non-Public Offering of Shares Listing Announcement_Sina Finance_Sina.com
• https://static.cninfo.com.cn/finalpage/2025-04-21/1223155483.PDF
• Zhongji Innolight (300308)_Company Announcements_Zhongji Innolight: 2024 Annual Report_Sina Finance_Sina.com
• Zhongji Innolight (300308)_Company Announcements_Zhongji Innolight: 2022 Annual Report_Sina Finance_Sina.com
• Company Announcements_Eoptolink: 2024 Annual Audit Report_Sina Finance_Sina.com
• Company Announcements_Accelink Technologies: 2024 Annual Report Summary_Sina Finance_Sina.com
• HGTECH 2024 Annual Report
• Innolight Technology (301205)_Company Announcements_Innolight Technology: 2024 Annual Report_Sina Finance_Sina.com
• Zhongji Innolight (300308.SZ) Latest Financial Report Downloads (PDF)_Historical Financial Report Downloads - Qianzhan
• Security Code: 300308　　Security Name: Zhongji Innolight　　Announcement No.: 2026-082
• Microsoft Word - 2026-081: Zhongji Innolight 2026 Semiannual Report
• Zhongji Innolight Co., Ltd. 2026 Semiannual Report Summary|Shanghai Securities Journal
• Zhongji Innolight (300308)_Company Announcements_Zhongji Innolight: 2026 First-Quarter Report_Sina Finance_Sina.com
• BOCOM International Securities: Lowers Zhongji Innolight Target Price to RMB 1,488.0, Maintains Buy Rating_Securities Star
• Zhongji Innolight Co., Ltd. 2025 Annual Report
• Zhongji Innolight (300308) Earnings Forecast_F10_Tonghuashun Financial Services
• Zhongji Innolight (300308)_Detailed Institutional Ratings
• Goldman Sachs Latest Research: Significant First-Mover and Scale Advantages; Zhongji Innolight 12-Month Target Price RMB 2,645_Sina Technology_Sina.com
• $Zhongji Innolight (SZ300308)$ BofA Securities Zhongji Innolight Research Report · Chinese Full Text (2026-06-11) ...
• Zhongji Innolight (300308) Analyst Consensus Estimates_Market Sentiment_Investing.com
• Zhongji Innolight (300308) Historical Stock Data: Historical Quotes, Prices and Charts_Investing.com
• Zhongji Innolight (300308)_Stock Quotes, Market Home_CFI.cn
• Individual Stock Research
• Zhongji Innolight (300308)_Company Announcements_Zhongji Innolight: Repurchase Report_Sina Finance_Sina.com
• Security Code: 300308　　Security Name: Zhongji Innolight　　Announcement No.: 2026-089
• Zhongji Innolight: Spends RMB 217 Million to Repurchase 239,000 Shares on September 9_Eastmoney
• Zhongji Innolight (300308)_Company Announcements_Zhongji Innolight: Announcement on Actual Controller’s Partial Share Pledge_Sina Finance_Sina.com
• Zhongji Innolight (300308)_Company Announcements_Zhongji Innolight: Announcement on Release of Actual Controller’s Partial Share Pledge_Sina Finance_Sina.com
• Zhongji Innolight (300308)_Company Announcements_Zhongji Innolight: Announcement on Release of Controlling Shareholder’s Partial Share Pledge_Sina Finance_Sina.com
• Zhongji Innolight (300308)_Company Announcements_Zhongji Innolight: Announcement on Specific Shareholder’s Partial Share Pledge and Release of Pledge_Sina Finance_Sina.com
• Zhongji Innolight (300308)_Company Announcements_Zhongji Innolight: Announcement on Providing Financial Assistance to a Controlling Subsidiary_Sina Finance_Sina.com
• Security Code: 300308  Security Name: Zhongji Innolight  Announcement No.: 2026-078
• Beijing Zhongshi Weiye Technology Co., Ltd. 2026 Semiannual Report Summary
• Zhongji Innolight (300308) Company Announcements_Sina Finance_Sina.com
• Zhongji Innolight (300308)_Company Announcements_Zhongji Innolight: 2026 Semiannual Report Summary_Sina Finance_Sina.com
• Microsoft Word - 2026-081: Zhongji Innolight 2026 Semiannual Report
• Zhongji Innolight (300308) PE|Valuation|Fundamentals - Lixinger
• Zhongji Innolight (300308) Share Price, News, Quotes and Charts - Futunn
• Zhongji Innolight (300308) Technical Analysis_Future Forecasts_Buy/Sell Suggestions_Investing.com
• Zhongji Innolight (300308.SZ) K-Line Chart & Technical Analysis | KlineVision | Kline Vision
• Main Funds Review: RMB 3.120 Billion Flows into Zhongji Innolight; RMB 1.216 Billion Flows out of GigaDevice_Eastmoney
• Zhongji Innolight (300308) Main Funds Sold Net RMB 3.066 Billion on September 2_Securities Star
• Zhongji Innolight (300308) Fund Flows_Individual Stock Quotes_Tonghuashun Finance
• Zhongji Innolight (300308.SZ) Stock Quotes_Historical Data_Main Funds - Dayboda Data

This report was automatically researched, compiled and generated by AI based on publicly available information. The information is current as of the September 14, 2026 close; the September 14 closing price, change and valuation data are mainly sourced from Lixinger, while some market data have not yet been fully cross-verified across multiple platforms; Bollinger Band data are as of September 8, 2026. Timing differences may exist, and specific data should be confirmed against the company’s formal announcements and authoritative data terminals. This report is for information compilation and research reference only, does not constitute investment advice, and investors should make independent judgments and bear investment risks themselves.