... Full inspection high efficient administration VALVE PART/OEM CASTING AND MACHINNING SERVICE Company introduction ... 3, Inspection:4, Raw Material ExportOEM Casting:1, Casting Material: Grey iron, Ductile iron, Alloy steel , Carbon Steel, Aluminum, ... all the necessary assistant.Technology & EquipmentCasting: Sand Casting, Investment Casting, Die Casting, Forging, etc.Machining: Lathe, Boring, Vertical ...