group 733.46 678.37 Water management business group (only amount recognize in year 2018) 137.49 67.53 Total 870.95 745.90 Yours Truly, WIIK & HOEGLUND PUBLIC CO., LTD. Mr. Wiboon Sangwithayanon Chief

investment 16 MB and the remaining decrease of 24.4 MB resulted of efficiency in management. Please be informed accordingly Your Sincerely, (Miss Vachiraporn Aganapanya) Chief Financial Officer

informed accordingly. Sincerely yours, (Mrs. Klinsukhon Luephongphaichit) Chief Financial Officer

agreements of Baht -0.3 million Please be informed accordingly. Sincerely yours, (Ms. Huai Hui, Lee) Chief Operating Officer

accordingly Yours sincerely, (Mr. Chalerm Harnphanich M.D.,Ph.D.) Chief Executive Officer

Chief Executive Officer

) Mr.Pairoj Wattanavarodom Position Director 5) Mr. Somchai warunpantulak Position Director 4. Appointing Mr. Pongsak Sawatyanon to be the Deputy Chief Executive Officer Effective Date on June 14,2018 Please be

under the Rule for Acquisition and Disposition of Assets of Listed Companies. Yours sincerely, -signed- (Mr. Chaiwat Kovavisarach) President and Chief Executive Officer Investor Relations Division Tel. 0

of the Board of Directors. Thus, you have been informed accordingly. Sincerely Yours, - Sign – Mr. Suphot Wanna Chief Executive Officer

acknowledgement and dissemination to the public and other investors. Sincerely yours, ( Mr. Tradsin Chongussayakul ) Chief Executive Officer and Acting Managing Director T Engineering Corporation Public Company