... , mold steel , teflon ,PVC, bakelite, nylon, delrin, arcylic and so on. 3.Surface treatment:hardening, carburizing, high frequency, anodizing ... zinc plating, nitriding, degreasing, painting and so on. 4.Quality assurance :in accordance with your request 5.main markets: Japan, ... Italy,Australia,UK,USA,Canada and all over the world ...