No. WHAUP-CS014-2562 1 8 August 2019 Re Share Acquisition in Duong River Surface Water Plant JSC in Vietnam Dear President The Stock Exchange of Thailand WHA Utilities and Power Public Company

Limited of 1,999,998 shares as 99.99%. The shares represent a total value of approximately millions baht 230,000,000. The purpose of this approval is that Currently, the company has developed and sells the

Company Limited of 1,999,998 shares as 99.99%. The shares represent a total value of approximately Million Baht 230,000,000. The purpose of this approval is that Currently, the company has developed the

หัวข้อ (Translation) No. Tor.For 5/2018 January 25, 2018 Subject: Transactions with the connected persons and Appointment of the Company’s Executives To: The President of the Stock Exchange of

10, 2019 Subjects : The acquisition of ordinary shares of WPS (Thailand) Co., Ltd. increased 15% Attention : The Director and Manager of the Stock Exchange of Thailand The Board of Directors of Eastern

1 / 4 IR.013/2018 19 July 2018 Re: The Information of a Disposition of Assets (Land sale) (Amendment) To President The Stock Exchange of Thailand T Engineering Corporation Public Company Limited (the

หัวข้อ (Translation) No. Tor.For 1/2019 January 24, 2019 Subject: Transactions with the connected persons in 2019 To: The President of the Stock Exchange of Thailand The Board of Director’s Meeting

December 12, 2018 Subject : Acquisition of 84.50% shares of WPS (Thailand) Co., Ltd. Attention : Director and Manager Stock Exchange of Thailand Enclosure : 1. Memorandum of the Acquisition of Asset

005/2017 24 November 2017 Subject: Informing on the acquisition of assets of ZIGA Innovation Public Company Limited Attention: The President The Stock Exchange of Thailand Attachment: Disclosure of

26th February 2020 Subject: Transaction to acquire land from a related party. To: President The stock Exchange of Thailand According to the resolution of Board of Directors meeting of S.Kijchai