Group 1 - The core viewpoint of the article highlights that Zhongrun Optical (688307.SH) has been deeply engaged in the optical and optoelectronic industry chain for many years through its subsidiary, Dais Optoelectronics [1] - Dais Optoelectronics produces a range of precision optical components, optical devices, optical modules, and systems [1] - The beam splitter and wave plate developed and manufactured by Dais Optoelectronics can be applied in the field of quantum communication [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]