The optical terminal box is mainly used for the connection and storage between the external optical fiber and the equipment pigtail. It provides mechanical and environmental protection for the fusion of optical fiber and optical fiber, the fusion of optical fiber and pigtail, and the connection of optical connector. Optical terminal box is widely used in network systems, data, image transmission systems, CATV cable TV series, etc. The slide rail type DIN terminat box can meet customers' needs when the rack type terminal box and the wall mounted terminal box can not open up additional space.