ZYZJ Petroleum Equipment Co., Ltd., incorporated in 1978 with 1,060 employees, is a key high-tech enterprise in Henan Province engaged in drilling, oil extraction, operation and manufacturing of petroleum machinery as well as a network member supplying special equipments necessary for petroleum export from China and pumping units, sucker rods, and oil-well pumps for Sinopec Group and China National Petroleum C...

  ZYZJ Petroleum Equipment Co., Ltd. has firmly built up a concept pursuing healthy, ....