... in 1994,We are specialize in produce all kinds of precision machinery parts(nuts,bolts,fasteners,washers,pipe ... steel,alloy steel,aluminum,aluminum alloy3 Standard ISO ASTM GB ASTM DIN JIS4 Process drawings-mould making-raw casting- ... machines,punching lathes,mill machines7 Inspecton spectrum analysis insrument,tensile strength tester,hardness tester,roughness tester,impact test machine,pressure ...