Copper plated steel wire as screening wire,is a compound bimetallic material with steel unside and copper outside . It combines the high strength of steel and low resistance of copper . Tinned CCS , also called CP wire is made by tin plating based on CCS.With good raw material and newly designed machines ,we are able to produce as soft CCS as pure copper, with more than 30% elongation and less than 300mpa tensile strength , conforming to RoHs directives.