... milling machine ,milling machine ,drilling machine ,tapping maching,chamfering machine and so on .(details show in below sheet)2 ... chrome copper, mold steel , teflon ,PVC, bakelite, nylon, delrin, arcylic and so on.3.Surface treatment: hardening, carburizing, high frequency ... , nickel plating, zinc plating, nitriding, degreasing, painting and so on.4.Quality assurance: in accordance with your request5 ...