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Wuxi Zhengyuan Casting Company was established in 1992 .We mainly produce:parts of turbocharger,nodular iron castings, grey iron castings, aluminum alloy castings, high-Ni iron castings, precision machining processing and R&D of new products. We got the quality certification of ISO9002 in 1999 and we got the QS9000:1998 quality certification in 2002 ,In 2007 we got the TS16949 quality certification.The quality administation of our products is strictly controled according to TS16949 system.