1 (5) | China National Petroleum Corp * | CHN | ||
2 (6) | PetroChina Co Ltd | CHN | ||
3 (13) | China Petroleum and Chemical Corporation * | CHN | ||
4 (49) | State Grid Corporation of China * | CHN | ||
5 (136) | China National Offshore Oil Corp * | CHN | ||
6 (289) | China Railway Engineering Corp * | CHN | ||
7 (315) | China Railway Group Ltd | CHN | ||
8 (375) | China Railway Eryuan Engineering Group Co Ltd | CHN | ||
9 (513) | China Coal Research Institute | CHN | ||
10 (995) | Daqing Oilfield Co Ltd, CN | CHN | ||