... optional Our advantage:good quality,high technology,fine managementItemCNC processing sheet metal Material SteelSteel,stainless steel,aluminum,brass,etc Making process Laser ... ,Riveting,Grinding,Stamping,Assembing,etc Surface treatment Powder coating,Hot galvanized,Painting,Polishing,Brushing,Cata phoresis,Chrome/Zink/Nicket plating,Anodize ...