Roofing Screw, Drywall Screw, Blind Rivet manufacturer / supplier in China, offering Timber Screw - Flat Head - Torx Recess Yellow Zinc Coated, Timber Screw - Wafer Head - Torx Recess Yellow Zinc Coated, Anchor Bolt for Concrete Coating Ruspert High Strength Carbon Steel, Specially Hardened. Special Anti-Corrosion Coating Ruspert and so on.