We specialize in custom precision machinery parts. 1.Certification:ISO9001 2. Drawings Accepted 3. Quick shipment 4. ... in 1994,We are specialize in produce all kinds of precision machinery parts(nuts,bolts,fasteners,washers,pipe fitting,washers,etc),our products ... ,grey iron,stainless steel,alloy steel,aluminum,aluminum alloy3 Standard ISO ASTM GB ASTM DIN JIS4 Process drawings-mould making-raw ...