1.Material:Ductile iron,Iron,stainless Steel,Carbon Steel, Alloy Steel, Aluminum, brass, or on request of customer2.Process ... company ?Answer : We are a factory with designing, manufacturing, machining ,marketing in WuXi city, JiangSu province, near from ShangHai ... jet engine companies. Parts that require sharp finishes can be cast without extra effort. Lettering, precision holes, splines, serrations, ...