... treatment: Polishing, zinc plating, nickel plating, chrome plating, powder coating, The following are our company and factory practice: 1. High ... casting parts.1.We are s a professional Zinc,copper and Aluminium die casting parts manufacturer ,we have been in ... Machinery parts.3.Surface finish: Chrome plating, Brass coating,Nickel plating,Powder coating,Polishing,Sand blasting,Zinc plating,etc. ...