... Surface treatment:sand blasted Heat treatment: Anneal cast partsWe are a foundry which is near the Qingdao harbor port ... 2.OEM service available 3.Materials: stainless steel,cast iron,pig iron,carbon steel,alloy steel,non-ferrous ... ,grey iron,ductile cast iron and so on4.Process: lost wax process, ... ,machining,machining center,plating,HeatTreatment,ect cast parts