As a transmission medium of integrated cabling system engineering, the application range of leather fiber optic cable is more and more extensive, and it constantly meets people's demand for information communication network. Due to the special indoor environment, indoor optical cables maintain very good flame retardant, mechanical properties and light transmission characteristics at the same time, but also meet the requirements of the standard for toxicity, corrosion and low smoke. So how do optical cables meet the needs of indoor cabling?