... power cable 1.Advanced equipment 2.Free samples 3.OEM Copper conductor, PVC insulated and sheathed, steel wire armoured power ... , in tunnel or cable trench,able to bear external mechanical forces, but unable to bear large pulling force.VLV22Aluminium ... cable trench, well and direct buried.Able to bear external mechanical forcesand determinate pulling force.VLV32Aluminium conductor, PVC insulated, steel ...