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26TH Dec. 2007, Tianjin Heavy Steel Mechanical Equipment Co., Ltd. was restructured to a joint-stock company.

9TH Jan.2009, the branch factory, Tianjin Zhenhan Mechanical Equipment Co., Ltd.was founded. (wholly-owned subsidiary, registered capital 50 million RMB). 

7TH Jul.2010, the branch factory, Tianjin Greenland Mechanical Equipment Co., Ltd., company general assembly base, was founded. (wholly-owned subsidiary, registered capital 30 million RMB). 

8TH Aug. 2013, the company was listed on “National Equities Exchange and Quotations”. 

16TH June.2015, the branch company, Tianjin MiYi Scientific Co., Ltd. Was founded (holding subsidiary, registered capital 5 million RMB).