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Henan Coal Mine Safety Training Center Online Examination System 7. 1 Why can't I log in?
This is not an open and casual login system, and you need to get the login account and password from the coal mine safety training center.

Henan coal chemical enterprises are:

Henan Coal Chemical Group, Zhongyuan Dahua Group and Henan Coal-to-Gas Group.

Coal mining enterprises are:

Mei Zheng Group, Pingmei Group, Yongmei Group, Coking Coal Group and Hemei Group.