In recent years, Yingli Group take on the valve industry development fast lane, company relies on scientific and technological progress, to realize the continuous rapid development. It is also take the management idea of basing on metallurgy, development of nuclear power, expanding petrochemical, service energy, and rely on the technical advantages of the R & D team, constantly to develop new valve products. Our main products ball valve, butterfly valve, globe valve and gate valve have obtained civilian nuclear pressure equipment design and manufacturing license issued by the Provincial Security Bureau. And our group has become one of the large suppliers of domestic and foreign large-scale enterprises on butterfly valve, ball valve.