Weifang Yuhong Petroleum Machinery Co., Ltd. (formerly Anqiu petroleum drilling and production machinery factory) is a manufacturer of petroleum machinery. It is a high-tech enterprise. It is a member of CNPC's oil drilling and production accessories network, a member factory of Sinopec's supplies and accessories resource market, drilling machinery Research Institute of CNPC drilling engineering Technology Research Institute, and CNPC exploration and Development Co., Ltd Research Institute of oil and gas production equipment research base. The enterprise has heat treatment, machining equipment, scientific detection means and perfect quality system.