Our company built in 1975, belonged to large-scale company. Major products: sets of high-strength bolts with large hexagon head for steel structures; sets of wrench type high-strength bolt for steel structures; high strength fasteners and parts and components for automobile, internal-combustion engine and engineering machinery, standards and series special fasteners with GB,ISO,ANSI,DIN. Qs9000: we have already passed the authentication of ISO9002 quality system and Ts 16949.