What is gysta optical cable? Features of gysta optical cable: Precisely control the excess length of the optical fiber in the loose tube, so that the optical cable has excellent tensile properties and temperature performance. ●The PBT loose tube is filled with fiber paste, which performs critical maintenance on the optical fiber. Protection ●The outer diameter of the optical cable is small, light weight and easy to lay ●The steel wire armor has excellent lateral pressure resistance and is bulletproof ●Longitudinal water-blocking tape and filled with water-blocking cable paste ensure the longitudinal water-blocking effect of the optical cable ●Double-sided plastic-coated steel (aluminum) with moisture-proof layer and anti-lateral pressure