Production process:
Raw mrterial——Chemical Tes——Mould Making——Wax Injection——Reparing Burr——Assembly——Sand-Shell Making——Dewaxing——Chemical test before pouring——Pouring——Knockout——Cutting——Grinding——Shot Blasting——Acid Washing——Process Inspection——Machining——Robot Machining——Cleaning——Pressure——Assembling——Final Inspection——Package
