... kinds of precision machinery parts(nuts,bolts,fasteners,washers,pipe fitting,washers,etc),our products are widely used in furniture, ... aluminum alloy3 Standard ISO ASTM GB ASTM DIN JIS4 Process drawings-mould making-raw casting-sandblasting-rough machining- ... melting furnance,casting machines,drill machine,laser cutting lathes,CNC machines,grinding machines,punching lathes,mill machines7 Inspecton ...