1)Insulation:flexible PVC 2)Braid and foil shield 3)Certificate:CE,ISO9001,CCC 4) ... TC 1 the conductor material is free oxygen-copper wires 2 pvc insulated, pvc jacket 3 braid and foil shield4 Passes ... ,broadcast system, Voice frequency transmissin, Karaoke, Microphones connecting line. Audio cable microphone cable