Screw, Fastener, Self-Drilling Screw manufacturer / supplier in China, offering Xrf Hex Head Selfing Drilling Screw Roofing Screw with Ruspert Coated, Xrf 2000 Counts Roofing Nails Round Cap Nails for House Wrap Fastening, Xrf Blue Ruspert Coated Concrete Screw Anchor for Brick Block Concrete and so on.