the director of the company and member of the Audit Committee To Director and Manager The Stock Exchange of Thailand Reference is made to the resolutions of the Board of Director Meeting No. 3/2019 of

Limited To: Secretary-General, The Office of The Securities and Exchange Commission (the “SEC”) President, The Stock Exchange of Thailand (the “SET”) Board of Directors and Securities Holders of Glow Energy

, Bangkok 10900, Thailand Fax : (662) 936-1669 ทะเบียนเลขท่ี 0107554000097 Registration No. 0107554000097 HYDROTEK PUBLIC COMPANY LIMITED บริษทั ไฮโดรเท็ค จ ำกดั (มหำชน) (Translation) No. 079/0960 25

, Bangkok 10900, Thailand Fax : (662) 936-1669 ทะเบียนเลขท่ี 0107554000097 Registration No. 0107554000097 HYDROTEK PUBLIC COMPANY LIMITED บริษทั ไฮโดรเท็ค จ ำกดั (มหำชน) (Translation) No. 082/0960 25

, Bangkok 10900, Thailand Fax : (662) 936-1669 ทะเบียนเลขท่ี 0107554000097 Registration No. 0107554000097 HYDROTEK PUBLIC COMPANY LIMITED บริษทั ไฮโดรเท็ค จ ำกดั (มหำชน) (Translation) No. 084/0960 26

........ Year ............. Year ............. Year ............ Total assets Total liabilities Shareholders’ equity Total income Cost Net profits Earnings per share (EPS) Debt/equity ratio (D/E ratio) Return on

No. ED-MD2020-0008 March 12, 2020 Subject: Announcement of schedule AGM for the year 2020 and omission of dividend for year 2019. Attention: The President,The Stock Exchange of Thailand The Meeting

Section 33, Section 34, Section 41, Section 43, Section 44, and Section 64, of the Constitution of the Kingdom of Thailand, in combination with Clause 30(1) and Clause 7 of the Notification of the Capital

equity method. 3 Describe the nature and proportion of other incomes, other significant incomes must be displayed in a separate row (if any). Give a separate description of each product line or business

ผ่านระบบ OFAR และ Validation Message Sheet "EQ & Others Feature" Equity & Others Feature Header No. Field name Description Format Not null Possible value Remark 1 Company Code รหัสบรษัิทจัดการในระบบ