... precision machinery parts. 1.Certification:ISO9001 2. Drawings Accepted 3. Quick shipment 4.Factory Packaging & Delivery Packaging Detail:general export ... We are specialize in produce all kinds of precision machinery parts(nuts,bolts,fasteners,washers,pipe fitting,washers,etc),our ... material cast iron,ductile iron,grey iron,stainless steel,alloy steel,aluminum,aluminum alloy3 Standard ISO ASTM GB ASTM ...