The removable optical cables and micro-cluster removable optical cables developed by the company are widely used in European and American countries, Russia, Northern Europe and other regions, and the performance indicators of the optical cables are fully up to standard. This series of products adopts full dry design, easy to branch and extract, small size, light weight, easy to install, low smoke and halogen free sheath to ensure good flame retardant performance, precise process control to ensure mechanical and temperature performance, especially suitable for Digging, extracting, and opening skylights are widely used in the vertical wiring of FTTH buildings.