-517-0109-14 Fax 66-2-5170529 February 27, 2017 Subject Management Discussion and Analysis for the year ended December 31, 2016 To Managing Director of Stock Exchange of Thailand Table of Financial Ratio

-9320 1 Ref: PLC.2020/005 March 9, 2020 Subject : Dividend payment and the connected transaction and schedule of the 2020 Annual General Meeting of Shareholders To : President, The Stock Exchange of

-9320 1 Ref: PLC.2020/005 March 9, 2020 Subject : Dividend payment and the connected transaction and schedule of the 2020 Annual General Meeting of Shareholders (Amendment) To : President, The Stock

Energy Recovery Unit from Thai Oil Public Company Limited and entry into the relevant agreements (Edited) Attention: President Stock Exchange of Thailand Enclosure: Information Memorandum on Asset

limited company; (8) “listed company” means any company having shares listed on the Stock Exchange of Thailand; (9) “offering convertible bond at lower market price” means offer for sale of convertible bond

ng, Khon Ka ing paymen Kaen to NM ation memo ownership a Kaen, dated nceling the 2018 and N ldings, Am nsaction of on Kaen, to ector and M e Stock Exch ormation M ltimedia Gr e reference a Group Pu 8

July 31, 2020 Subject : Notification to dispose of ordinary shares in RPV Energy Company Limited (2 nd Amendment) Attention : The Director and Manager of the Stock Exchange of Thailand Eastern Power

right to purchase, or to convert those securities into, shares of such business; (2) “Business” means a company whose shares are listed on the Stock Exchange; (3) “SEC Notification No. KorChor. 53/2545

The Stock Exchange of Thailand Enclosure: Information Memorandum on the Asset Disposal, Schedule 1 of Rich Asia Corporation Public Company Limited Reference to the Board of Directors’ meeting of Rich

November 13, 2017 The President & Director, The Stock Exchange of Thailand (SET) LETTER OF CLARIFICTION: CENTEL’s Q3/2017 & YTD 9 MONTHS /2017 OPERATING PERFORMANCE RESULTS This is to inform the SET