copper alloy die casting part 1.we are manufacturer in ningbo 2.high quality competitive ... 3. Surface treatment: Polishing, zinc plating, nickel plating, chrome plating, powder coating, The following are our company and factory practice: 1 ... components,Zinc alloy die-casting,Bathroom accessories,Machinery parts.3.Surface finish: Chrome plating, Brass coating,Nickel plating,Powder coating,Polishing,Sand ...