... technique of Lost-wax,Silicon sol precision casting,Investment & vacuum casting,and our compay is an ISO9001:2008 ... offerOEM ServiceWe can produce all kinds of investment casting, vacuum casting, turbine rotor, turbocharger, turbojet engine parts , ... in competition, professional in manufacture.Weifang YiLi Precision Casting Co.,Ltd.Professionally - manufacture precision castings productsNickel-based ...