... become one of your long-term suppliers. Product ParameterMaterialCarbon Steel, Stainless Steel, Aluminium, Copper, Brass, BronzeFinishZinc/Nickle/ ... What raw material do you use? A: stainless steel, carbon steel, mild steel, galvanized steel, aluminum , brass, copper,Bronze, etc. Q4 ... zinc/nickel /chrome plating, painting, anodized,hot dip galvanized, sandblasted, etc. Q5. How do you ensure quality ...