On June 12,optical chip and compound semiconductor heavyweightSan’an Optoelectronics (600703.SH) took a serious hit. By press time, the stock had slid to 14.13 yuan per share, marking a 7.4% dip and trimming its market capitalization to roughly 70.495 billion yuan.
Late on June 11, San’an Optoelectronics dropped an official announcement. They confirmed receipt of a notice from their controlling shareholder, Xiamen San’an Electronics Co., Ltd. (referred to as “San’an Electronics”), revealing that a creditor named Lin Suzhen (“the applicant”) has petitioned the Xiamen Intermediate People’s Court in Fujian Province to initiate bankruptcy restructuring proceedings against San’an Electronics.
The company stressed that, as of the disclosure date, San’an Electronics hasn’t officially received the court’s acceptance paperwork yet. It’s still unclear whether the court will formally approve the restructuring request or if San’an Electronics will actually enter the process. That said, if it does go through, the subsequent restructuring steps could definitely ripple through the company’s equity structure and shift control dynamics.
Founded by Lin Xiucheng back in 2000 and later going public via a reverse merger in 2008, San’an Electronics currently holds 1.13 billion shares of San’an Optoelectronics, accounting for 22.65% of the total outstanding stock. Roughly 625 million of those shares are already pledged, and multiple rounds of account freezes have been placed on them. Right now, Lin Xiucheng remains the company’s actual controller.
At 70 years old, Lin Xiucheng used to steer the ship as chairman for both the San’an Group and San’an Optoelectronics. He handed the reins to his eldest son, Lin Zhiqiang, in 2017, who stepped up to serve as company chairman.
Lin Xiucheng first claimed the title of Xiamen’s wealthiest individual on the Forbes Rich List back in 2010. In 2015, father and son Lin Xiucheng and Lin Zhiqiang reported a combined fortune of 34 billion yuan, ranking 43rd on the Hurun Rich List and cementing their spot as Fujian’s richest duo. The 2026 Hurun Global Rich List places their net worth at 16 billion yuan, putting them at rank 2,044 globally and third among Xiamen’s most prominent tycoons.
Back in March,San’an Optoelectronics announced that actual controller Lin Xiucheng had been placed under surveillance and opened for formal investigation.Shortly after, the company’s general manager found himself swept up in the same net. On the evening of April 8, they issued a statement confirming they’d received a notice from the Yuzhong District Supervisory Commission in Chongqing. Vice Chairman and General Manager Lin Kechuang had been taken into custody and formally investigated on April 7.
Lin Kechuang is the lead figure behind the San’an-STMicroelectronics project. On February 27, 2025, the joint venture’s silicon carbide (SiC) wafer plant in Chongqing officially kicked off operations.Speaking at a power semiconductor manufacturing summit in Chongqing that very day, Lin pointed out that domestic SiC power chips are expected to roll out en masse into vehicles within the next one to two years, with production costs forecasted to drop by anywhere between 40% and 50% in that same window.
Established in August 2023, the joint venture splits ownership 51% to San’an Optoelectronics and 49% to STMicroelectronics (China) Investment Co., Ltd., with a total projected investment clocking in at roughly 23 billion yuan. The facility is set to churn out approximately 480,000 8-inch SiC wafers annually, focusing heavily on automotive-grade electronic control chips. To keep the supply chain tight, San’an Optoelectronics dropped another 7 billion yuan in July 2023 to fully fund Chongqing San’an Optoelectronics Semiconductor Co., Ltd., building a parallel line for 480,000 8-inch SiC substrates. That line went live in August 2024, specifically geared to feed high-quality substrates directly into the joint venture.
Industry watchers have long flagged the San’an-STMicroelectronics deal as the absolute linchpin for San’an Optoelectronics’ pivot away from traditional LED manufacturing toward next-generation semiconductors, with some even calling it the company’s “transition lifeline.”Now, with both Lin Xiucheng and Lin Kechuang facing formal investigations, the burning question on everyone’s mind is whether this flagship project is going to take a hit, which has quickly become one of the top concerns circulating across the industry.
Headquartered in Xiamen, Fujian, San’an Optoelectronics makes its bread and butter in compound semiconductor R&D, manufacturing, and services. Their portfolio spansLED, microwave radio frequency, power electronics, and photonics,with their tech powering everything from lighting, displays, and IR sensors to AR glasses, EVs, charging stations, 5G infrastructure, 3D vision systems, cloud computing, telecom towers, and solar inverters.
San’an Optoelectronics crossed a tough milestone in 2025, posting its very first annual loss since going public.According to their 2025 earnings report, the company ticked up revenue by 11.45% year-over-year to 17.949 billion yuan.However, net profit attributable to shareholders took a nosedive of 239.70% to -353 million yuan, while non-GAAP net profit slipped 61.94% to -828 million yuan.
Things didn’t get much smoother in Q1 2026. Revenue came in at 2.907 billion yuan, down 32.59% year-over-year. Net profit tied to shareholders landed at 67.4922 million yuan, marking a sharp 68.15% decline compared to the same period last year.
