... steel sheet or tube),stainless steel,copper ,brass,aluminum,etc4.Finish:zinc plated,chromated plated, Electrophoresis, Dacromet ,powder painting,etc5.Industries:Funiture hardware, electronic hardware ... , bending, punching, threading,welding, tapping, rivetingMaterialAluminum, copper, brass, stainless steel, steel, iron, alloy, zinc etc.FinishPolishing; Anodize; SandingPowder coating; Vacuum Plating ...