CNC Machining, Casting Metal, Forging Metals manufacturer / supplier in China, offering Customized Silica Sol Investment Casting Stainless Steel Precision Threaded Gear-Tooth Locking Hexagonal Nut, Precision Silica Sol Investment Casting Stainless Steel Mechanical Flower-Shaped Threaded Locking Bushing Sleeve, Silica Sol Investment Casting Stainless Steel Precision Mechanical Fastening Retaining Ring Clamp and so on.