Shanghai Tongsheng Precise Fastener Co,. Ltd is specialized provide the each kind of bolt, the set screw, the bearing tightly use the set screw, the pipe pluge, the knife handle screw, the blot for steel structure, the rivet, the criclip, the pin, the nut, the washer and the special fasteners etc.
The product widely is suitable for the energy, the electron, the machinery, the chemical industry,