CNC Machined Part, Bolts, Screws manufacturer / supplier in China, offering DIN 7500, M4 Steel Torx Socket Head Cap Screws, PF31, PF32, Pfs31, Pfs32 Steel/Stainless Steels Pressin Style Captive Panelfastener Assemblies/Slotted Spring Screw, SBB M2-M10 Customized Brass Hex Male-Female Standoffs and so on.