Masonry Anchor, Tapping Screw, Driling Screw manufacturer / supplier in China, offering M10/M12 Thread 1mm Pitch Zinc Plated Hollow Thread Rod for Pipe, High Quality 304 Stainless Steel Angle Fastener Zp or Red Treatment, Wholesale M3/M4/M6/Threaded Insert Nut Brass Knurled Nut Self Locking Nuts and so on.