We specialize in custom precision machinery parts. 1.Certification:ISO9001 2. Drawings Accepted 3. Quick ... 1994,We are specialize in produce all kinds of precision machinery parts(nuts,bolts,fasteners,washers,pipe fitting,washers,etc),our products ... Standard ISO ASTM GB ASTM DIN JIS4 Process drawings-mould making-raw casting-sandblasting-rough machining-finish machining-surface treatment-product ...