... aluminum alloy, zinc alloy. 2) Surface Treatment: chrome plating, sandblasting, painting , anodizing, powder coating, electrophoresis. 3) Suitable for various industries: ... casting, CNC machining, CNC milling, Stamping, Plastic injection ,Painting and powder coating, Customized cub-assembly.Based on quality products ... question on our production. Aluminum die cating parts of a binocular microscope