3344 Fax. 66 2 654 3323 No. PACE IR2018/013 Date: 15 May 2018 Subject: Explanation of the Operating Results for the three-month period ended 31 March 2018 changing over 20% To: The President The Stock

6 December 2007 No. PACE IR2018/013 Date: 15 May 2018 Subject: Explanation of the Operating Results for the three-month period ended 31 March 2018 changing over 20% To: The President The Stock

Reservoir during August – November 2020 4. SIGNIFICANT EVENTS As of 30 June 2020, TRIS Rating affirmed the company rating and senior unsecured debenture rating of Eastern Water Resources Development and

information: (1) the method of procuring loan, for instance, applying for a loan from a financial institution or issuing a debenture. In any case, the Company shall present highlights of the loan agreement or

Capital Market Supervisory Board concerning Offer for Sale of Newly Issued Debentures in the Category of Structured Note or Debentures Imposing Obligation on Debenture Holder which are Issued by Financial

Newly Issued Debentures in the Category of Structured Note or Debentures Imposing Obligation on Debenture Holder which are Issued by Financial Institution; (5) the Notification of the Capital Market

Debentures in the Category of Structured Note or Debentures Imposing Obligation on Debenture Holder which are Issued by Financial Institution; (5) the Notification of the Capital Market Supervisory Board

MD&A Eng Q1-19 13-5-19 _1_ 1 Translation UWC 014-2019 May 14, 2019 Subject : Management Discussion and Analysis for quarter 1-2019 To : President of the Stock Exchange of Thailand Ua Withya Public

November 12, 2004 1/5 No: SN. 064/2019 Aug 9, 2019 Subject: Clarification of Operating Results and Financial Status of Quarter 3 ended June 30, 2019 Attention: President The Stock Exchange of

(Translation) UAC.CS/013/2019 August 14, 2019 Subject: Explanation of the operating results for the second quarter period ended June 30, 2019 To: President The Stock Exchange of Thailand Attachment