... machining 4)18 years experience 5) OEM OEM zinc alloy die casting 1) Material: zinc alloy2) Workmanship: ... aluminum alloy, zinc alloy 2) Surface Treatment: drilling,milling,deburring,shot peening,polishing,chrome plating, sandblasting, painting, anodizing, powder ... Gravity casting, CNC machining, CNC milling, Painting and powder coating, Customized cub-assembly. With abundant practical experience, ...