- Business
- Zhongji Innolight Co., Ltd. (300308.SZ) designs, develops, manufactures, and sells high-end optical communication transceiver modules and related optical devices principally for data centers, telecommunications networks, and cloud computing applications. The company offers a comprehensive portfolio of products including 400G and higher-speed QSFP-DD, OSFP, and DR series optical modules for AI-driven data center interconnects; coherent optics for metro and long-haul networks; silicon photonics-based transceivers; and optical components such as lasers, filters, and multiplexers, with a focus on 800G, 1.6T, and future 3.2T solutions to support hyperscale cloud providers and 5G infrastructure. Headquartered in Longkou, Shandong Province, China, with operating facilities in Suzhou and other locations, Zhongji Innolight conducts research, production, and sales primarily in China while serving global customers in North America, Europe, and Asia.
Founded in 2005 as Shandong Zhongji Electrical Equipment Co., Ltd. and renamed Zhongji Innolight Co., Ltd. in September 2017 upon pivoting to optical communications, the company operates in the optoelectronics segment of the semiconductor industry, targeting hyperscalers, telecom operators, and enterprise data centers.
Recent developments include the October 2025 equity transfer agreement to acquire an additional 32.55% stake in Chengdu Tsuhan Science & Technology Co., Ltd. for CNY 100 million to bolster optical component capabilities, following its initial acquisition in February 2020; the July 2023 purchase of Chongqing Junge Electronic Technology to expand electronic product offerings; and strong 2025 performance with triple-digit stock gains driven by surging demand for AI data center transceivers amid orders linking thousands of GPUs in clusters, alongside pursuits of a major Hong Kong listing.