Optical communication equipment is a communication device that achieves information interaction based on the principle of optical wave transmission. Its core components include a light source module, optical receiver, and optical fiber transmission medium. Through optical modules, it converts electrical-optical signals and enables high-bandwidth, low-latency data transmission via optical fibers or spatial lasers. It is widely used in fields such as data centers, telecommunications networks, and smart cities. Technological advancements and policy support have driven the coordinated development of the industrial chain's upstream and downstream sectors. Leading enterprises have made breakthrough progress in ultra-high-speed transmission and silicon photonics integration, achieving 3D stacking and co-packaged optics (CPO) solutions for photonic devices and electronic chips. In December 2025, Hengtong Photonics established Hengtong Huahai Deep Sea Technology (Xiamen) Co., Ltd. to engage in the manufacturing of optical communication equipment