... sand casting: 1) Material: aluminum, iron, brass 2) Tolerance:+/-0.05mm 3) Lead time:15 days 4) Finish:polishing sand casting: ... Specialized in metal precision prototype machining, forging, casting, plastic tooling making in Zhongshan ... Payment Terms/Shipment Terms/Lead time):Materials:Aluminum, brass, iron, steel etc.Finish:shot blast, powder coating etc.Tolerance ...