Core Viewpoint - Phoenix Optical (600071) indicated that its products, such as prisms and lenses, are primarily used in imaging optics, with a very small proportion applicable to optical communication-related fields [1] Group 1 - The company responded to investor inquiries on an interactive platform [1] - The main applications of the company's products are in imaging optics [1] - The usage of the company's products in optical communication is minimal [1]

Core Viewpoint - Aopu Optoelectronics (002338) has clarified that its K9 optical glass is primarily used in the manufacturing of prisms, lenses, and windows for optical components [1] Company Summary - Aopu Optoelectronics specializes in K9 optical glass, which serves as a key material in the production of various optical elements [1]

Core Viewpoint - Aopu Optoelectronics (002338) primarily focuses on the research, production, and sales of optoelectronic measurement and control instruments, with its developed lenses mainly for internal use [1] Company Summary - The company engages in the R&D and manufacturing of optoelectronic measurement and control equipment [1] - The lenses produced by the company are primarily intended for its own use [1]

Core Viewpoint - Fuzhijun Technology (002222) is actively engaged in the optical communication sector, providing various optical components to its clients [1] Company Summary - The company offers a range of optical elements including gratings, wave plates, mirrors, and lenses specifically for the optical communication field [1]

Group 1 - The company, Fuzhijun Technology, confirmed its capability to produce optical components related to WSS in the optical communication field [2] - The company offers a range of optical components including gratings, wafers, mirrors, and lenses to its customers [2]