CNC Machining Parts, Metal Stamping, Casting Parts manufacturer / supplier in China, offering DIN933 DIN931 Brass Copper Bolts and Nuts Brass Hex Head Bolts, Hexagon Head Bolts DIN 933 with Full Thread Stainless Steel Bolts Hex Screw, Stainless Steel DIN 931 Bolts Metric Full Thread Half Thread Hexagon Bolt and so on.