Rank;Global Rank;Institution;Country;Sector
1;5;China National Petroleum Corp *;CHN;Companies
2;6;PetroChina Co Ltd;CHN;Companies
3;14;China Petroleum and Chemical Corporation *;CHN;Companies
4;46;China Railway Engineering Corp *;CHN;Companies
5;55;China Railway Group Ltd;CHN;Companies
6;63;China Railway Eryuan Engineering Group Co Ltd;CHN;Companies
7;216;China National Offshore Oil Corp *;CHN;Companies
8;529;China Coal Research Institute;CHN;Companies
9;590;Daqing Oilfield Co Ltd, CN;CHN;Companies