Tiehu Petroleum Machinery Co., Ltd. is an integrated petroleum machinery manufacturing enterprise specializing in the production of oil drilling equipments and has been one of plants for supporting well control equipments organized by China National Petroleum Corporation.If you want to get more details, pls. kindly contact to us with tiehupetrolmachinery (at) hotmail (dot) com or zonghua2008 (at) hotmail (dot) com