WT Fasteners is a fasteners manufacturing group which consists of CRRC Landmark Anti-Lock Technology, Guozhi Machinery,Tongfa Railway group, and Hebei W.T Fasteners ,We are located in Handan city ,Hebei province ,China ,the total production aera accounting for about 500 hectares. The products mainly we produce are High Strength Hex Bolts & Nuts Series such as DIN933/931, DIN912, DIN6921, DIN934, ASTM/ANSI 18.1.2, DIN982 & 985, ANSI/ASME B 18.16.6, DIN6923 etc..Hardend screw series such as Self Drilling Screws series DIN7504(K), ( P), (T), (N) , etc.,Needle Point Screw series of Drywall Screws, Chipboard Screws,self tapping screws etc., Besides we also offer OEM Service according to the customers'design and drawings.