... :steel,stainless steel,iron, plastic,aluminum,bronze,brass etc.3.Casting form:die-casting, high-pressure casting, sand casting,investment casting, and all kinds of precision ... centerCnc latheVertical latheCnc milling machineFlat grinderExternal grinderDrilling machineGear hobbing machine 5.Surface treatment: powder coating, heat treatment, galvanization, chromeplate, blackening, machining ...