Coaxial cable is an electrical cable with two concentric conductors, and the conductor and the shield share the same axis. The most common coaxial cable consists of a copper wire conductor surrounded by an insulating material. On the outside of insulation is the layer of shielding. The entire cable

The first thing is to observe the cable surface. The outer sheath material of indoor communication cables is basically PVC (polyvinyl chloride). PE (polyethylene) is basically used as the sheath of outdoor cables. The advantages of PVC are high fire resistance, low hardness and good bending performa