As the A-share listed company earnings season concludes, the optical communication industry, serving as the foundation for computing power, has delivered strong results. This is primarily driven by significant increases in capital expenditure for AI infrastructure both domestically and internationally in 2025, leading to a full-scale surge in demand for optical modules.
From a shipment structure perspective, 800G products became the dominant force in the market in 2025, while 1.6T high-speed products entered the introductory phase. Volume shipments are expected to begin in 2026, and the pace of their commercialization is likely to become the next competitive watershed.
Driven by both surging demand and technological transition, leading optical module companies experienced high earnings growth. In 2025, revenue for Zhongji Innolight, Eoptolink Technology Inc., and Suzhou Tfc Optical Communication Co.,Ltd. increased year-on-year by 60.25%, 187.29%, and 58.79% respectively. In the first quarter of 2026, revenue for the three companies grew by 192.12%, 105.76%, and 40.82% year-on-year, with Zhongji Innolight's Q1 2026 revenue already surpassing its total for the first half of 2025.
It is noteworthy that the fundamental nature of Suzhou Tfc Optical Communication Co.,Ltd.'s business differs from the other two companies. Zhongji Innolight and Eoptolink Technology Inc. primarily produce complete optical module systems, supplying cloud providers and IDC customers downstream. In contrast, Suzhou Tfc Optical Communication Co.,Ltd. focuses on optical components and chips, positioning it further upstream in the supply chain.
This different position in the industrial chain has led Suzhou Tfc Optical Communication Co.,Ltd. to exhibit distinct performance trends and financial metrics, showing significant differences compared to the other two firms.
**Top Client Exceeds 60% Share; Gross Margin Declines Amid Industry Price Competition**
From a profitability standpoint, Suzhou Tfc Optical Communication Co.,Ltd.'s gross margin has consistently been higher than those of Zhongji Innolight and Eoptolink Technology Inc. However, while its margin has fluctuated in recent years, the other two have shown steady increases, gradually narrowing the margin gap.
Over the past five years, the gross margin ranking among the three leading optical module manufacturers has consistently been "Suzhou Tfc Optical Communication Co.,Ltd. > Eoptolink Technology Inc. > Zhongji Innolight." But since the optical module industry began scaling up in 2024, Zhongji Innolight and Eoptolink Technology Inc. have seen their gross margins rise significantly for two consecutive years, accumulating increases of 9.04 percentage points and 16.82 percentage points, respectively.
Conversely, Suzhou Tfc Optical Communication Co.,Ltd.'s gross margin has been volatile. It increased by 2.91 percentage points in 2024 but then fell sharply by 3.25 percentage points in 2025. Over the two-year period, its margin effectively decreased, shrinking a once substantial double-digit percentage point advantage to just about 6 percentage points in 2025.
The company stated in its annual report that competition in the optical component industry is intense, with most of its products facing pricing pressure. Simultaneously, its factory in Thailand is in the initial stages of operation. Due to lower employee proficiency and capacity utilization, production costs are higher than in domestic facilities, further squeezing the company's profit space.
In terms of competitive landscape, domestic optical component manufacturers hold a prominent global market share in traditional single-core fiber, standard connectors, and low-to-mid-speed optical modules due to their cost-performance advantage. However, this has also led to fierce price competition in the traditional, lower-speed optical component market.
Seeking breakthroughs, leading optical component manufacturers have been transitioning towards high-speed, high-end product segments in recent years. This area has higher technical barriers, testing manufacturers' innovation capabilities and product quality.
Suzhou Tfc Optical Communication Co.,Ltd. is one of the earliest domestic companies to develop 1.6T optical engines. However, the company also noted in its 2025 annual report that while it holds a leading position in 1.6T optical engines, the overall mass production timeline for these products is still relatively short. The number of mass production customers is currently limited, and there is uncertainty regarding whether multi-customer sampling verification will successfully lead to mass production and secure larger volume orders.
Furthermore, Suzhou Tfc Optical Communication Co.,Ltd. suffers from significant reliance on a major client, which may also contribute to its weaker bargaining power.
In 2025, Suzhou Tfc Optical Communication Co.,Ltd.'s largest client was Fabrinet, the world's largest optical module contract manufacturer. Sales to Fabrinet accounted for 63.31% of the company's total annual revenue. Additionally, sales to its top five clients represented a highly concentrated 89.73% of total revenue.
In comparison, the largest client accounted for only 24.06% of Zhongji Innolight's sales and 22.97% for Eoptolink Technology Inc. Their top five client concentrations were 75.98% and 72.34%, respectively.
Suzhou Tfc Optical Communication Co.,Ltd.'s deep integration with Fabrinet provides indirect access to NVIDIA's optical module supply chain. Yet, this extreme focus is also a double-edged sword. Any future reduction in orders from this key client or adjustments to the supply structure could significantly impact the company's performance.
**Liquidity Pressured from Both Ends; Cash Flow Ratio Hits Five-Year Low**
Amid high downstream client concentration, Suzhou Tfc Optical Communication Co.,Ltd.'s accounts receivable turnover ratio decreased in Q1 2026. This trend is opposite to that of Zhongji Innolight and Eoptolink Technology Inc., and its ratio is now substantially lower than the other two companies.
In Q1 2026, the annualized accounts receivable turnover ratios for Zhongji Innolight and Eoptolink Technology Inc. continued to improve, rising from 6.09 to 8.18 and from 5.60 to 5.99 respectively. In contrast, Suzhou Tfc Optical Communication Co.,Ltd.'s ratio declined from 4.60 to 4.29.
Generally, a lower accounts receivable turnover ratio indicates a deterioration in the company's bargaining power within the industrial chain. It also suggests slower collection times and potentially increased risk of bad debts.
Additionally, supply-side risks emerged in the optical module sector in Q1 2026. The introduction and ramp-up of upstream production capacity were slow, struggling to match the pace of downstream demand expansion. To secure raw materials, major optical module manufacturers saw a sharp increase in prepayments.
In Q1 2026, prepayments surged simultaneously for Zhongji Innolight, Eoptolink Technology Inc., and Suzhou Tfc Optical Communication Co.,Ltd., rising from 134 million yuan, 17 million yuan, and 21 million yuan at the start of the year to 1.488 billion yuan, 682 million yuan, and 97 million yuan, respectively. The combined total skyrocketed from 172 million yuan to 2.267 billion yuan, a thirteen-fold increase in just one quarter.
Suzhou Tfc Optical Communication Co.,Ltd. noted in its annual report that factors such as the pace of upstream capacity release and yield ramp-up have led to periodic tight supply, extended delivery times, and price volatility risks for some key materials in the supply chain.
The simultaneous exposure of risks from both upstream and downstream, causing rapid growth in both receivables and prepayments, has put Suzhou Tfc Optical Communication Co.,Ltd. in a squeeze. This resulted in its net operating cash flow to net profit ratio falling to its lowest point in five years.
Since the global surge in optical module demand began in 2024, Suzhou Tfc Optical Communication Co.,Ltd.'s cash flow ratio has declined year by year, recording 0.935 in 2024, 0.921 in 2025, and a sharp drop to 0.370 in Q1 2026. In comparison, the ratios for Zhongji Innolight and Eoptolink Technology Inc. in Q1 2026 were 0.533 and 0.247, respectively, roughly in line with their 2024 levels.
In summary, Suzhou Tfc Optical Communication Co.,Ltd. shows significant differences from Zhongji Innolight and Eoptolink Technology Inc. in terms of business segments, scale, and performance trends. Apart from gross margin, Suzhou Tfc Optical Communication Co.,Ltd. does not demonstrate a clear advantage in other metrics, and even this sole gap is gradually narrowing as peers catch up.
However, although Suzhou Tfc Optical Communication Co.,Ltd.'s revenue and profit growth rates were the lowest among the three—with neither revenue nor net profit attributable to shareholders growing by more than 60% year-on-year in 2025 or Q1 2026, a stark contrast to the consecutive doubling of performance seen at Zhongji Innolight and Eoptolink Technology Inc.—the market has shown favor towards Suzhou Tfc Optical Communication Co.,Ltd., awarding it a valuation far exceeding the other two.
As of the market close on May 8, 2026, Suzhou Tfc Optical Communication Co.,Ltd.'s total market capitalization was 254.2 billion yuan. Based on its 2025 net profit, its P/E ratio was approximately 126 times. In comparison, the P/E ratios for Zhongji Innolight and Eoptolink Technology Inc. during the same period were 91 times and 57.5 times, respectively.
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