... plating, sandblasting, painting , anodizing, powder coating, electrophoresis. 3) Suitable for various industries: auto, machine, valve, pneumatic , etc. 4) Whole ... Sand casting, Gravity casting, CNC machining, CNC milling, Stamping, Plastic injection ,Painting and powder coating, Customized cub-assembly. Based on ... any question on our production. aluminum die casting mechanical seals for pumps