宇瞳光学：主要产品为光学镜头及光学镜片

Core Viewpoint - The company, Yutong Optical, primarily focuses on optical lenses and optical glass, which are utilized in various sectors including security, automotive, smart home, and consumer electronics, and does not engage in the fire safety equipment sector [2] Group 1 - The main products of the company are optical lenses and optical glass [2] - The applications of these products span across security, automotive, smart home, and consumer electronics industries [2] - The company has confirmed that it does not involve itself in the fire safety equipment field [2]