Our main production: national standard GB/T12-1998, GB/T14-1998, GB/T794-1993 and American standard (ANSI), British standard (BS), German standard (DIN), Italian standard (UNI), Japanese standard (JIS), international standard (ISO) and other high-quality carriage bolts, grade strength 4.8S 6.8S 8.8S 10.9S, product specifications M6-M27 national standard carriage bolts (semi-circular head square neck bolts), pipe-specific fishtail wire, Plough wire, guardrail wire, glass curtain wall special T-type bolt, bridge wire, 16-shaped wire, high-strength bolt, belt wire and other products.