... 1)26 years experience on OEM presision casting 2)ISO9001:2008, CE/PED Certified by TUV ... Work 2001,CAXA, UG, CAD/CAM/CAEProduction capacitymore than 2,000MT per yearheat treatment:anneal, quenching, normalizing, carburizing,polishing ... tester, impact tester, hardness tester, take NDT with X-ray, UT and M.P.T, final dimension ... iron case for transportation. Investment casting parts butterfly valve parts