Screws, Nails, Rivets manufacturer / supplier in China, offering Self-Drilling Roofing Screws Hex Head for Metal DIN7504 C1022A Carbon Steel with Zinc & Ruspert Coating, Roofing Hex Head Tornillos Self Drilling Tek Screws with EPDM Rubber Washers, 2.8mm 3.75mm 4.5mm Galvanised Smooth Shank Roofing Nails for Wooden Frames and so on.