Sinopec Star Petroleum Co.
Northwest Company of SINOPEC Star Petroleum Exploration and Production Company
SINOPEC Star Petroleum and Production Company
Southwest Company of SINOPEC Star Petroleum Exploration Production Company
left-star right-star partial order
star minimal lattice-ordered star hemirings
star minimal lattice-ordered star rings
the star semimodules of no star factor
the star semirings of no star factor
China Sinopec Corp.: internal control
Development Department of SINOPEC Corporation
Drilling Research Department of Sinopec Petroleum Exploration and Development Institute
East China Branch Oil Productive Company of Sinopec
Exploration and Production Research Institute of Sinopec
First Oil Extraction Factory of SINOPEC Jiangsu Oil Field
Geologic Research Institute of Jiangsu Oilfield Company of SINOPEC
Geologic Science Research Institute of Jiangsu Oilfield Branch of SINOPEC