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Yangquan coal industry group
Yakeshi Inner Mongolia five nine coal group
Shenhua ningxia coal group co., LTD
Shanxi jin coal group
Henan coking coal energy co., LTD
Taishan Longan coal group, Shanxi coal transportation and marketing
Datong Tashan Coal Mine
Datong coal mine group co., LTD
Huo zhou coal group co., LTD
Shanxi xishan coal and electricity co., LTD