... 2. We make them by precision casting and investment casting process in Shandong, China ( Valve Casting / Casting valve ).3. Standard: OEM ... control lathe, CNC machining center, boring machine, universal miller, vertical drill machine, bench drill machine, normal lathe, line cutter.10. Testing ... analysis room.Production capacity: Wax Injection Use the wax machine, liquid wax can be pressed by the mould ...