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

( Translation ) Ref. No. HARN 011/2019 14 November 2019 Subject: Notification about Related Parties Transaction To: Director and Manager The Stock Exchange of Thailand (“the SET”) The committee of

regards to becoming a listed company in the Stock Exchange of Thailand. Moreover, the company has recently set up a new department in order to ensure the sufficiency of internal control. In addition

October 30, 2020 Subject: The Management Discussion and Analysis for the second quarter ended June 30, 2020 To: President The Stock Exchange of Thailand Well Graded Engineering Public Company Limited (“the

November 13, 2020 Subject: The Management Discussion and Analysis for the third quarter ended September 30, 2020 To: President The Stock Exchange of Thailand Well Graded Engineering Public Company Limited

Transaction in accordance with the Securities and Exchange Commission and Stock Exchange of Thailand Notifications, total 8.96 million Baht, which is calculated to be 0.08% of the Company’s Net Tangible Assets

fees. The above measures, which are considered a Related Parties Transaction in accordance with the Securities and Exchange Commission and Stock Exchange of Thailand Notifications, total 5.27 million

. Units and unitholders information 8. Management structure 9. REIT supervision 10. Social responsibilities 11. Internal control and risk management 12. Preventive measures against conflicts of interest

., Ltd and appointment of member of audit committee. (Revised) To: President The Stock Exchange of Thailand Enclosure: Information Memorandum regarding the Acquisition of Asset of Demeter Corporation

www.ucity.co.th (-Translation-) Ref. No. U.SET 004/2020 31 March 2020 Subject: Acquisition and Disposal of Ordinary Shares in Joint Venture Companies To: The President The Stock Exchange of Thailand U City Public