Persistent surpassing for 13years,Yuanda valve accumulated rich professional knowledge and operation experience .Strategy partners of transnational groups such as American Crane International Holdings Co.,Ltd. and so on .Annual capacity is more than 8000tons .National inspection free ISO9000.14000 and API and CE authentication. AAA of Grade Credit.Manufacture license of Special Equipment .The Independent Right of Own-operation Export and Import .It highly focuses on quality and custmor benefits.Safety control and cooperation and cooperation for mutual benefit.