The prodduct quality and business credits of company had made us win the reputation and trust of clients both china and abroad. The products was widly applied in long-distance piping engineering(such as transmission of the finished oil, transmission of the natural gas and the deep processing as well as transmission of coalbed gas), petroleum refinery, chemical industry, pharmaceutical, electrical power, light industry, textile, iron steel industry, nuclear station, ship vessels, and transmission of coal slurry and etc. For instance, the products were used in the large-medium scale national key engineering such as geermu-lhasa piping line engineering for general logistics department of pla, datang eletrical, china huadian coporation, southwest oil gas field branch of china national petroleum, qinghai oil field branch of china national petroleum, etc. Pearl river delta finished oil piping engeering of sino-pec, oriental onshore terminal project of cnooc, the fudao great chemical fertilizer engineering of cnooc which had won the high honors and reputation from the clients.