1) Precision dimension control; 2) Perfect surface treatment/outlook; 3) Standard: ASTM\DIN\BS\JIS 4) OEM service available Details:1) Lost Wax ... steel , cabon steel, alloy steel, heat resistance steel, 3) Excellent Quality Control System; Has obtained international approvals ISO 9001, TS 16949 etc ... , GB, UNS, ACIOur Casting plant photos as following: precision casting service