Down hole Special Service Company of Zhongyuan Oilfield
Exploration and Development Science research Institute of Zhongyuan Oilfield Branch Company
Exploration and Development Science Research Institute of Zhonyuan Oilfield Subcompany
中原油田分公司勘探开发科学研究院
中原油田分公司勘探开发科学研究院；中国地质大学
Geophysical Research Institute of Zhongyuan Oilfield
No.6 Oil Production Plant of Zhongyuan Oilfield Company
No.2 Production Plant of Zhongyuan Oilfield
Geophysical Research Institute of Zhongyuan Oilfield Company
Exploration Development Research Institute of Zhongyuan Oilfield Company
中原油田分公司勘探开发科学研究院
中国地质大学；中原油田分公司勘探开发科学研究院
Exploration Development Research Institute of Zhongyuan Oilfield / Puyang
Director of Subsidiary Rights
Exploitation of Subsidiary Resource
Geoscience Research Institute of Shengli Oilfield Subsidiary
shipping subsidiary of registration
Subsidiary of Qinghai Oilfield
veto seven batches of subsidiary legislation
Fuyu 3rd Oil Production Plant of Jilin Oilfield Subsidiary
Northwest Subsidiary of Research Institute of Exploration and Development
Tuha Oilfield Subsidiary
Anhui Exploration Branch of Jiangsu Oilfield of Petrochina