Roofing Screw, Drywall Screw, Blind Rivet manufacturer / supplier in China, offering Stainless Steel 304 316 A2-70 A4-80 DIN1481 ISO8752 GB879 Heavy Duty Slotted Spring Cylindrical Dowel Lock Pin, Carbon Steel Black Oxide Finished DIN1481 ISO8752 GB879 Heavy Duty Slotted Spring Cylindrical Dowel Lock Pin, Carbon Steel Black Oxide Finished DIN1444 ISO2341 GB882 Straight Parallel Cylindrical Pin with Hole Flat Head Clevis Pin and so on.