What are the top five groups in Ordos?

According to the recently released "20 15 Top 500 Private Enterprises in China", five enterprises in Erdos No.1 * * * were shortlisted, namely:

Inner Mongolia Ordos Investment Holding Group Co., Ltd. (79), Inner Mongolia Yidong Resources Group Co., Ltd. (94); Inner Mongolia Yitai Group Co., Ltd. (102) Yili Resources Group Co., Ltd. (147), Inner Mongolia Shuangxin Energy Chemical Co., Ltd. (47 1)