Qingzhou Nanzhang Petroleum Machinery Factory (hereinafter referred to as the Factory), lies in the north of Qingzhou City, closely adjacent to Jinan-Qingdao Highway, 185 Km from Qingdao in the east, and 70 Km from the Shengli Oil Field in the north. It enjoys an advantageous geological position and convenient transportation. The Factory is a professional producer of petroleum machinery; solid control equipment and slurry pump parts. The Factory has passed the certification of ISO9001 Quality Management System, and has joined the networks of SINOPEC and China Petroleum Natural Gas Corporation.