... BV,meet RoSH,reach Stainless Steel Shaft ,metal machine shaftQuality control: Dimensional check througout the production ... hardware parts, hex / quadrangle rivet nuts, High-end communications equipment spare parts and so on. Main Epuipment ... grinding,grinding machines,automatic milling machineslathes, tapping machines, screw machines, thread rolling machine, rolling machine, drill press, punch ...