中国石油石油勘探开发科学研究院
Research Institute of Petroleum Exploration and Development
PetroChina
中国石油石油勘探开发科学研究院西北分院
northwest sub-institute
Research Institute of Petroleum Exploration and Development
PetroChina
northwest branch
northwest institute
中国石油石油勘探开发研究院
Petroleum Exploration and Development Research Institute
PetroChina
beijing
什锦油石
assorted sharpening stone
当代石油石化
petroleum & petrochemical today
跨国石油石化公司
multinational petroleum and petrochemical company
石油石化
Petroleum and Petrochemical Industry
petrochemical
Petroleum and Petrochemical
石油石化产业
Petroleum and Petrochemical Industry
石油石化工业
Petroleum and Petrochemical Industries
Petroleum and Petrochemical Industry
石油石化节能
energy conservation in petroleum&petrochemical industry
石油石化企业
petrolic or petrochemical enterprises
Petroleum and Petrochemical Enterprises
petrochemical enterprise
石油石化物资采购
petroleum & petrochemical material procurement
石油石化行业
Petroleum and Petrochemical Industry
中国海洋石油油田服务股份有限公司
china oilfield services limited