... with many good foundries producing steel castings, stainless steel castings, aluminum castings and copper castings. Now it becomes a supply chain ... Casting Material: Grey iron, Ductile iron, Alloy steel , Carbon Steel, Aluminum, Brass,etc2, Standard: ISO 9001:20083, Full set Quality Control4 ... , etc.Machining: Lathe, Boring, Vertical , Horizontal, Milling, Saw etc. 2011 precision auto part/OEM casting