Jingshi import and Export Trading Co., LTD., specializing in the production of 12.9, 10.9, 8.8 high strength bolts, teeth, wood screws, countersunk head with tenon, stainless steel bolts, stainless steel shaped pieces, T-bolts, curtain wall wire, double heads, anchor screws, U wire, embedded parts. Bolt steel structure torsional shear bolts, high strength bolts, round nuts, special-shaped nuts, bolts and other difficult special-shaped parts, all kinds of metal custom products, American standard, German standard, British standard, European standard, UNI standard, international standard ISO, products, and industrial and mining railway machinery parts, mass production, welcome to plan to sample custom