... . Product scope: machining parts, high precision machining parts, oem machining parts 2. Material of machining parts, high precision machining parts, oem machining parts:carbon steel, stainless ... . 4. Finishing:zinc plating, nickle plating, chrome plating, phosphating, polishing, case hardening, carburization hardening, sand blasting, anodizing 5. Testing facility:coordinate ...