... , brass, etc. 3.Machining processesMetal fabrication, machining, welding, forming, shaping, punching, etc.4.Surface treatment:zinc, chrome plate, nickle plate, e ... .5.Machinery and equipmentsCNC machining center; General planning and grinding machine;General punching machine, CNC turning center; Wire EDM, 4 or 5 axis ... or as per customer's requirement OEM high qulity Plunger (machine parts)