Screws, Nails, Rivets manufacturer / supplier in China, offering 25mm 32mm 40mm 45mm 50mm 100mm Galvanized Hardened Steel Concrete Nails Masonry Cement Nail, 1", 1.5", 2", 2.5", 3", 4" Smooth Spiral Shank Electro Galvanized Concrete Steel Nails, 100mm X 4.2mm 100mm*4.5mm Smooth Fluted Shank Concrete Masonry Steel Nail Concrete Nails and so on.