... 9001 2008) We can produce high quality bolt and nut per customer's requirements. The feature of ... 1/2-6” M12-M160 high-strength bolts, nuts and screws in accordance with GB, ANSI, DIN, EN ... -2007, JIS, ISO, SH, HG, JB, GD and GJB standards, as well as non-standard fasteners. With ... powerful technical strength, complete equipment, superior quality and fine after-sales service, the company has been ...