MaterialDuctile Iron,Website:http://www.hh-casting.com, Grey Iron, Aluminum, Stainless Steel, ... or a trading company ?Answer : We are a factory with designing, manufacturing, machining ,marketing in WuXi city, JiangSu province, near from ... lower processing cost through improved machinability.Ductile Iron AdvantagesSince its development in the mid-1940s, ductile iron casting production has grown ...