| Specialized in manufacturing flange screws, GB819, GB818, GB818-85, truss head screws, column head hex socket screws, plain head hex socket screws, countersunk hex socket screws, half-circle hex socket screws, extension screws and non-standard screws. The standards include ANSI, DIN, BS and JIS. | Specialized in manufacturing GB screws, pan head screws, lock tool screws, furniture screw, hex socket screws, nuts, carriage bolts, special bolts, pins, plain head hex socket screws, rivets, sphere screws, truss head screws, set screws, various bolts and non-standard screws. |