The optical fiber unit is positioned in the centre. Two parallel Fiber Reinforced Plastics (FRP) are placed at the two sides. A steel wire as the additional strength member is also applied. Then the cable is completed with a black or color LSZH sheath.

         · Special low-bend-sensitivity fiber provides high bandwidth and excellent communication
          .transmission property;
        · Two parallel FRP strength members ensure good performance of crush resistance to protect the fiber;
        · Single steel wire or massagers as the additional strength member ensures good performance of tensile strength;
        · Simple structure, light weight and high practicability;
        · Novel flute design, easily strip and splice, simplify the installation and maintenance;
        · Low smoke, zero halogen and flame retardant sheath.