stranded copper clad steel wire 1.UL,CE,ISO9001 2. High copper layer adhesion 3.Low prices 4.Install convenient, XI ... CE,ISO9000 and other international certificates.The main products including: copper clad ground rod, exothermic welding mould, exothermic welding powder ... materials. Surface for the oxygen-free copper. 4, High copper layer adhesion: are because copper layer and steel surface are a ...