Machining Parts: CNC Machined Ductile Iron Casting with Tempered or Annealed Heat Treatment 1) Machining Parts material: different kind of stainless steel, iron, copper and aluminum alloy2) Surface treatment: polishing, phosphating, zinc plating, nickel plating and chrome plating etc3) Main equipment: CNC, automatic lathe, meter lathe etc4) Application: auto industry, electronic, construction, ...