... 20,000 square meters.Workshop equipment:Die casting machine: 7 machines for weight 900 tons to ... equipments.Post processing machine: Drill machine, multipoint drill machine, Dull polish machine, Polishing machine, Slinging machine, Cylinder processing machine, lapping machine, punching, and ... ranging from 0.50g to 10,000kg4,Surface finish: polishing, oiled(rust-prevented), zinc-plated, chrome-plated, ...