... of stainless steel, steel, brass or aluminum etc2) Professional CNC equipment: CNC Milling Machine 30 sets, CNC Lathe Machine 6 sets ... ,Multi-Function Milling Machines,Grinding Machines .etc3) Measuring & testing equipment: Projecting profile, roughness tester, hardnesstester, concentricity tester etc4) Surface treatment: Polishing, zinc plating, nickel ...