... .Surface treatment:nickel plated 4.CE and ISO9001:2000 certifica precision Brass screw fittings 1. Product scope:machining parts,,cnc lathe ... , stamping machine, EDM, wire cutting machine.4. Finishing:zinc plating, nickle plating, chrome plating, phosphating, polishing, case hardening, carburization hardening, sand blasting, anodizing5 ...