CIG SHANGHAI, CO., LTD.

CIG SHANGHAI, CO., LTD., also known as CIG, is a global technology company headquartered in Shanghai, China, and founded in 2005. It is a publicly traded company, listed on the Shanghai Stock Exchange (SHA:603083) and the Hong Kong Stock Exchange (SEHK:06166). As of December 31, 2025, CIG Shanghai had 1,354 employees. In the last 12 months, the company reported revenue of approximately CNY 5.22 billion (USD 734 million as of March 31, 2026).

CIG Shanghai specializes in the research, development, production, and sales of high-performance solutions for next-generation telecommunications and data center networks. Its product portfolio includes high-speed optical modules for hyperscale data centers, AI infrastructure, and 5G wireless networks, as well as broadband access solutions (e.g., XGS-PON, 25G, 50G ONT), wireless networking equipment (routers, gateways, Wi-Fi mesh, 4G/5G small cells), and carrier-grade Ethernet switches. The company also offers edge computing and industrial Internet products. CIG operates globally with affiliates and manufacturing facilities in the USA, Japan, Germany, and Malaysia.

In terms of patent litigation, CIG SHANGHAI, CO., LTD. appears to engage in patent assertion. Its single tracked case, CAMBRIDGE INDUSTRIES USA, INC. et al. v. Applied Optoelectronics Inc., lists it as a plaintiff at the Patent Trial and Appeal Board (PTAB). Cambridge Industries USA Inc. is an affiliate of CIG Shanghai, indicating that the company, through its subsidiaries, is actively asserting its patent portfolio.