CM Energy Tech Co., Ltd. — Board/Management Information 2018

May 21, 2018

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TSC Group Holdings Limited

(Incorporated in the Cayman Islands with limited liability)

(Stock code: 206)

SUPPLEMENTAL ANNOUNCEMENT REGARDING RESIGNATION OF DIRECTORS

Reference is made to the announcement of TSC Group Holdings Limited (the “ Company ”) dated 18 May 2018 (the “ Announcement ”). Unless the context otherwise requires, terms defined in this announcement shall have the same meanings as those defined in the Announcement. The board of directors of the Company has obtained additional information relating to the resignation of directors as set out below:-

Mr. Guan Zhichuan (“ Mr. Guan ”) resigned as independent non-executive Director on 18 May 2018 because he, being a professor at the College of Petroleum Engineering of the China University of Petroleum, wanted to devote more time to his teaching.

Dr. Lu Xiaoming (“ Dr. Lu ”) resigned as independent non-executive Director on 18 May 2018 in pursuit of his personal career development and to focus more on his family matters.

By order of the Board TSC Group Holdings Limited Wang Hongyuan

Executive Chairman

Hong Kong, 21 May 2018

As at the date of this announcement, the Board comprises three executive Directors, namely Mr. Wang Hongyuan, Mr. Jiang Bing Hua and Mr. Zhang Menggui; three non-executive Directors, namely Mr. Lou Dongyang, Mr. Wang Jianzhong and Ms. Li Rong; and two independent non-executive Directors, namely Mr. Chan Ngai Sang, Kenny, and Dr. Zou Zhendong.