Companies with market capitalizations of 800 billion are not uncommon in the A-share market. However, could you imagine that just four years ago, this company's stock price was just over 20 yuan? On April 15, 2026, Zhongji Innolight Co.,Ltd. hit another record high, closing at 779.98 yuan, with its total market capitalization soaring to 866.7 billion yuan. From a low of 17.65 yuan in 2022 to nearly 800 yuan today, the stock has surged over 44 times in four years. The actual controller, Wang Wei Xiu, started from a small motor factory in Longkou, Shandong, and made a successful bet on the right sector with a 2.8 billion yuan acquisition. His personal wealth now stands at 105 billion yuan, having quadrupled in one year, firmly establishing him as the richest person in Yantai.
Why the new high? Let's review why their stock price has reached another record high. First, a brief explanation: what is an optical module? It is a device for photoelectric conversion. The transmitting end converts electrical signals into optical signals, which are transmitted via optical fiber; the receiving end then converts the optical signals back into electrical signals. It is an indispensable component in data centers and communication networks. Current mainstream optical module speeds include 100G, 200G, 400G, 800G, and 1.6T. Here, G refers to Gbps (gigabits per second), and T refers to Tbps (terabits per second). An 800G optical module can transmit 800 billion bits of data per second, while 1.6T is double that.
Why have optical modules become so crucial in the AI era? Because AI training and inference require massive amounts of data to be transmitted at high speeds between GPUs. Taking a large model like GPT-4 as an example, the training process involves frequent data exchange between thousands, or even tens of thousands, of GPUs. If the transmission speed cannot keep up, the GPUs will "starve" for data; no matter how strong the computing power, it is useless without data. This is the fundamental logic behind the significant rise in stocks related to this theme over the past two years.
Returning to this company. On April 2, 2026, Bloomberg reported significant news: Zhongji Innolight had secretly submitted a listing application to the Hong Kong Stock Exchange. Although not officially confirmed, the market voted with its feet. The stock surged consecutively, with an intraday increase of over 10% on April 8, pushing the price to a historic high of 688 yuan and the market cap above 760 billion yuan. This was just the beginning. On the evening of April 13, Zhongji Innolight suddenly announced that its Q1 report, originally scheduled for April 24, would be released early on April 17 due to "smooth progress in preparation work." While such wording is common in the A-share market, the underlying signal is clear: performance is likely significantly better than expected, and the company wants to reveal it sooner.
Simultaneously, Huagong Tech also issued a Q1 forecast, indicating that profits from its optical interconnection business had increased by approximately 120% year-over-year, with shipments of 400G, 800G, and 1.6T high-speed modules rising substantially. The prosperity of the entire optical module industry was thus brought to the forefront. Another key catalyst: Zhongji Innolight secured a 1.6T CPO order from NVIDIA in the first quarter, with a single order value exceeding 30 billion yuan and a monthly demand as high as 300,000 units. The core driver? AI computing power. With the global race for large models in full swing, GPUs have become the hardest currency, and data transmission between GPUs is inseparable from optical modules. Zhongji Innolight is positioned right at the center.
From Motor Factory to Optical Module Leader. In 2022, Zhongji Innolight's lowest price was just 17.65 yuan. In four years, it has multiplied 44 times. The story begins in 1987. That year, Wang Wei Xiu founded the Longkou Zhenhua Electrician Special Equipment Factory in Longkou, Shandong, specializing in motor winding equipment. Over twenty years later, the company was renamed "Zhongji Equipment" and listed on the Shenzhen Stock Exchange in 2012 with an opening price of 20.51 yuan. If the story ended here, Zhongji Innolight would likely be an unremarkable manufacturing company, with its stock price hovering around 20-30 yuan for years.
The turning point came in 2008. That year, optical communication technology expert Liu Sheng founded Xu Chuang Technology in Suzhou. Xu Chuang Technology possessed strong technical capabilities; by 2014, its 40G QSFP+ single-mode optical modules already held a 37% global market share. In 2016, Wang Wei Xiu made a critical decision: Zhongji Equipment acquired 100% of Suzhou Xu Chuang Technology for 2.8 billion yuan. The restructuring was completed in 2017, and the company was renamed Zhongji Innolight. This acquisition was seen as a "minnow swallowing a whale" at the time, but in hindsight, the assets bought for 2.8 billion yuan now correspond to a market capitalization of over 760 billion yuan.
The pace accelerated thereafter: In 2018, Zhongji Innolight launched its 400G optical module series at the ECOC exhibition; in 2020, it launched the 800G pluggable OSFP and QSFP-DD800 series optical modules; by 2022, it was tied with Coherent for first place in global optical module market share, and from 2023 onward, it has held the top position alone. The real explosion, however, was due to NVIDIA. After ChatGPT ignited the global AI boom in 2023, Zhongji Innolight successfully entered NVIDIA's supply chain with its technological accumulation and mass production capabilities, becoming one of its core suppliers.
Business Analysis. It feels incomplete to discuss a company without some operational and financial analysis. Let's look at the fundamentals of this company. Full Year 2025: Data source: Company 2025 Annual Report / Tonghuashun. The net profit growth rate far exceeded the revenue growth rate. This indicates a shift in the product mix towards the high-end, with high-margin 800G and 1.6T modules accounting for an increasingly larger proportion. Furthermore, the gross margin for Q4 2025 alone reached 44.48%, an increase of 1.69 percentage points quarter-over-quarter. The full-year gross margin for 2024 was only 34.65%, meaning it improved by nearly 8 percentage points within a year. This rate of improvement is relatively rare in the manufacturing industry, where gross margins are generally low.
Overseas revenue was 34.637 billion yuan, accounting for 90.58% of the total. The top five customers contributed 75.98% of sales, with the largest single customer accounting for 24.06%. Leading North American players like Alphabet, Microsoft, and NVIDIA are on its customer list. In terms of cash flow, net operating cash flow was 10.896 billion yuan, nearly 100 million yuan more than the net profit. For a manufacturing company to achieve this indicates extremely strong collection capabilities and high customer quality.
In terms of business strategy, Zhongji Innolight is attempting to continuously upgrade its product structure towards higher speeds and higher margins, completely avoiding low-end price wars. Core Product Comparison (2025). Consequently, several institutions have issued relatively optimistic forecasts. However, a few points are worth noting. Exchange rate fluctuations have caused significant losses. In 2025, the company incurred exchange losses of 318 million yuan, whereas in 2024, it had exchange gains of 123 million yuan. For a company with ninety percent of its revenue coming from overseas, even a slight fluctuation in the RMB exchange rate can wipe out hundreds of millions in profit.
Then there is the inventory issue. The book balance of raw materials surged from 2.3 billion yuan at the end of 2024 to 4.6 billion yuan at the end of 2025. Total inventory increased from 7.35 billion yuan to 12.98 billion yuan. The company explained this as necessary to "secure capacity from suppliers," but the impairment risk associated with high inventory levels remains a concern for investors.
The Company's Moat. The core logic behind Zhongji Innolight's success can be summed up in one word: Speed. When the market mainstream was still 100G, it had already mass-produced 400G; when 400G began to普及, its 800G optical modules had captured over 40% of the global market share, ranking first in the industry for three consecutive years. In 2025, the company shipped over 2 million 800G optical modules, contributing to more than 60% of its revenue and profit. The 1.6T optical module completed customer certification and began volume shipments at the end of 2025, with rapid scaling expected in 2026.
Regarding market expectations, LightCounting predicts the global data center optical module market will reach $22.8 billion in 2026. Demand for 800G modules is expected to double, while demand for 1.6T modules is projected to grow more than tenfold. NVIDIA is the largest buyer. Market data indicates that global demand for 1.6T modules in 2025 was approximately 2.5-3.5 million units, with NVIDIA alone accounting for 80%. NVIDIA's demand is forecast to increase to over 5 million units in 2026. Zhongji Innolight has already secured 80% of NVIDIA's 1.6T orders. Looking solely at 1.6T modules, Zhongji Innolight's global market share is estimated between 50% and 70%, making it one of the few manufacturers globally capable of volume delivery.
This is its moat: technological leadership + production scale + customer lock-in.
The Duopoly Rivalry. However, a moat is not impregnable forever, and challengers are eager to compete. In the optical module sector, Zhongji Innolight and Eoptolink Technology Inc. together account for 43% of the global market share. But judging from financial data, the gap is narrowing rapidly. In the first half of 2025, Zhongji Innolight's revenue was 14.789 billion yuan, with a net profit of 3.995 billion yuan; Eoptolink's revenue was 10.437 billion yuan, with a net profit of 3.942 billion yuan. While the revenue difference was 4.3 billion yuan, the net profits were almost equal. A year earlier, in H1 2024, Zhongji Innolight's revenue was 3.96 times that of Eoptolink, and its net profit was 2.73 times larger. The speed of convergence is very rapid.
What is Eoptolink relying on? Firstly, product structure upgrades—its 800G LPO modules reduce power consumption by 50% and have already secured orders from Meta Platforms, Inc. and Amazon.com. Secondly, strong cost control—although sales and administrative expenses are growing quickly, the base is smaller, allowing for greater flexibility. Zhongji Innolight holds a relative lead in scale. But the competition between the "two giants" has shifted from "can they catch up?" to "will they overtake?". Eoptolink has already secured the exclusive design rights for the optical interconnection solution for NVIDIA's GB300 servers, supplying directly to the GB200 servers. Coupled with rapid追赶 from second-tier players like TFC Optical Communication and Accelink Technologies, the industry landscape is transitioning from a single dominant player to a multipolar competition.
Points Worth Watching. The future of this company is not without challenges, and several uncertainties (risks) deserve attention. Excessively high customer concentration. The top five customers contribute 75.98% of revenue, with the largest customer accounting for 24.06%. This means that any reduction in orders from a major customer would severely impact the company. If NVIDIA were to develop its own optical modules or shift orders to other suppliers, Zhongji Innolight's performance trajectory would immediately be affected.
Supply chain uncertainty. High-end optical chips and electrical chips account for about 50% of product costs and currently rely mainly on a few overseas suppliers; domestic companies participate in only about 4% of this segment. If geopolitical friction escalates, the risk of chip supply disruption is real.
Uncertainty in technological roadmaps. While silicon photonics is the current mainstream direction, new routes like thin-film lithium niobate are emerging. Japan's Fujitsu has achieved mass production of 400G thin-film lithium niobate modules, with losses 40% lower than silicon photonic modules. How long Zhongji Innolight's technological advantage lasts depends on the speed of its next-generation technology布局.
Slowing industry growth. LightCounting predicts the optical module market will grow at an annual rate of 30-35% from 2025 to 2026, but this is expected to decline to 15-20% from 2027 to 2030. The AI boom will eventually cool, at which point the valuation logic for optical module stocks may be repriced.
Conclusion. A motor factory from Shandong, facing a low industry ceiling, decisively invested 2.8 billion yuan to acquire an optical module startup. Eight years later, this transaction transformed a traditional manufacturing company into an indispensable core player in the global AI computing power industry chain. Issues such as share reductions by the actual controller, management pledges, high customer concentration, reliance on overseas supply chains, and profit erosion from exchange rate fluctuations are all worth monitoring.
From the perspective of the AI computing power trend, the cards currently held by Zhongji Innolight are indeed strong: a leading position in 1.6T modules, the top global market share in 800G modules, healthy cash flow, and a globalized production capacity layout. The AI computing power feast is far from over. But whoever continues to lead the next round of technological iteration will truly determine the height of this company's stock price ceiling. The arms race in AI computing power continues, and the story of Zhongji Innolight is far from finished.
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