... equipments 4.prompt delivery 5.non-standerd parts Item Noscrews and bolts partsMaterialsiron,aluminum,steel,copper,plastic,carbon steel,nylon,bronze, ... treatment,polishing,PVD/CVD coating,galvanized,electroplating,spraying,painting and so onBusiness scopeCNC center machining,drilling,turning,grinding,tapping, ... once we receive your valued enquiries with detail specification. screws and bolts parts