... aluminum alloy, zinc alloy.2) Surface Treatment: chrome plating, sandblasting, painting , anodizing, powder coating, electrophoresis.3) Suitable for various industries: auto, machine ... , valve, pneumatic , etc.4) Whole process including: Tooling, Die casting, Sand casting, Gravity casting, CNC machining, CNC milling, Stamping, Plastic injection ,Painting and ... finished. Production line test: With ...