Bolt, Nut manufacturer / supplier in China, offering Daxin Zinc Plated Concrete Screws Stainless Steel/Carbon Steel Concrete Screws Torx Flat Head Hi-Low Thread Concrete Screws, Self-Cutting Screw T30 Hexagon Socket Screw Is Specially Designed for Door and Window Installation, Daxin Furniture Bed Bolts, Hexagonal Screws, 304 Stainless Steel Fasteners and so on.