... , 2, 3, 3+1, 3+2, 3+3, 4, 4+1, 4+2, 5 and so on.Structure and materials:a Conductor ... advantages over paper insulated and PVC insulated cable;High electric strength, mechanical strength, high-ageing resisting; Environmental stress resisting anti-chemical ... with three technology(peroxide, silane and irradiation crosslinking). The flame-retardant cable covers all kinds of low-smoke low-halogen ...