... ,ISO 9001:2008 Full inspection high efficient administration VALVE PART/OEM CASTING AND MACHINNING SERVICE Company introduction Dalian Wills Machine Co. Ltd. ... , Machining: 3, Inspection:4, Raw Material ExportOEM Casting:1, Casting Material: Grey iron, Ductile iron, Alloy steel , Carbon Steel, Aluminum, Brass,etc2, Standard: ISO ...