Zhengzhou Coal Mining Machinery Group Co., Ltd. Class H revenue for the last year amounted to 4.58 B EUR, the most of which — 2.42 B EUR — came from its highest performing source at the moment, Coal Mining Machinery, the year earlier bringing 2.33 B EUR. The greatest contribution to the revenue figure was made by China — last year it brought Zhengzhou Coal Mining Machinery Group Co., Ltd. Class H 3.02 B EUR, and the year before that — 3.02 B EUR.