... prompt delivery 5) non-standerd parts Item Noscrews and boltsMaterialsiron,aluminum,steel,copper,plastic,carbon steel,nylon,bronze,solder alloy,HSS,tool ... treatment,polishing,PVD/CVD coating,galvanized,electroplating,spraying,painting and so onBusiness scopeCNC center machining,drilling,turning,grinding,tapping, ... we receive your valued enquiries with detail specification. screws and bolts