... steel, stainless steel, aluminum alloy, copperProcedureCutting,stamping,punching,threading,bending,welding,grinding,machining,surface finishSurface finishingzinc plating, hot dipped galvanized, powder ... -cut machine, CNC bending machine, CNC boring machine, punching machine, Welding robot, powder coat finishing line ,plasma cutting machine, hacksaw cutting machine ...