... quality 4.OEM service Item NO. jig and fixture design for sand casting productsMaterialsIron, aluminum, steel, copper ... mining machinery, building industry, electrical and electronic products, industrial machinery and equipment and transportation. etc;3, Process:turning , milling ,drilling , CNC ... Non-standard/standard/OEM/ODM/customized service provided2 high precision, tolerance can be ±0.002mm3 No ...