... ,lathing machine ,turning maching,wire cut machine and so on 2.Material :aluminum, mild steel, stainless steel, chrome ... teflon ,PVC, bakelite, nylon, delrin, arcylic and so on. 3.Surface treatment:hardening, carburizing, high frequency, anodizing, clear anodizing,black anodizing ... plating, zinc plating, nitriding, degreasing, painting and so on. 4.Quality assurance :in accordance with your request 5. ...