coated copper steel ground wire 1,copper layer average thickness than 0.25mm; 2 tensile ... and other international certificates.The main products including: copper clad ground rod, exothermic welding mould, exothermic welding powder, grounding electrode, GEM ... and so on. coated copper steel ground wire1, copper layer average thickness (conventional) ≥ 0.25mm; 2, ...