Yancheng Halisi Petroleum Machinery Co., Ltd. is a company specialising in manufacturing and exporting petroleum machinery products. Established in 2002, We have got API6A API6C certificates, and all the produce process are charged by ISO9001 system.Now we have advanced facilities and producing skills. Our main products:series of flat gate valves, plug valves , well head equipment&christmas tree , choke and kill manifolds, high pressure active elbows, etc.For more details, pls scan our website, ***** Should any of the items be of interest to you , pls feel free to contact us, hope we will build futher business relationship. Your any reply will be appreciated !</p>