1 (5) | China National Petroleum Corp * | CHN | ||
2 (6) | PetroChina Co Ltd | CHN | ||
3 (14) | China Petroleum and Chemical Corporation * | CHN | ||
4 (46) | China Railway Engineering Corp * | CHN | ||
5 (55) | China Railway Group Ltd | CHN | ||
6 (63) | China Railway Eryuan Engineering Group Co Ltd | CHN | ||
7 (216) | China National Offshore Oil Corp * | CHN | ||
8 (404) | Petrobras Brasil | BRA | ||
9 (529) | China Coal Research Institute | CHN | ||
10 (590) | Daqing Oilfield Co Ltd, CN | CHN | ||