... Approved Process: precision casting & Tooling Standard: JIS, DIN, ASTM,BS OEM stainless steel valveWe are a foundry which is near the Qingdao harbor ... 1.ISO9001:2000 Approved 2.OEM service available 3.Materials: stainless steel,cast iron,pig iron,carbon steel,alloy steel,non-ferrous,grey iron,ductile ...