... service 4.two hours to ningbo Copper alloy die castingProduct Description 1. Material: zinc alloy ,copper alloy.aluminum alloy2. Machining processes: Material ... : Polishing, zinc plating, nickel plating, chrome plating, powder coating, The following are our company and factory practice: ... finish: Chrome plating, Brass coating,Nickel plating,Powder coating,Polishing,Sand blasting,Zinc plating,etc.If ...