March 31, 2020 To The President The Stock Exchange of Thailand Management’s Discussion and Analysis Consolidated Financial Statements For three months ended March 31, 2020 Overall Group Performance Table

Rnj, (Translation) MD. 073/2020 May 13 , 2020 Re: Management Discussion and Analysis For the Operating Results ended March 31, 2020 To: President The Stock Exchange of Thailand Management Discussion

explanation and analysis Quarter 1/2020 ending 31 March 2020 Attention: The President of, The Stock Exchange of Thailand ZIGA Innovation Public Company Limited (“the Company”) would like to clarify operating

(Translation) UAC.CS/015/2020 August 14, 2020 Subject: Explanation of the operating results for the second quarter period ended June 30, 2020 To: President The Stock Exchange of Thailand Attachment

1 RP-AC 003/2020 AUGUST 14, 2020 Subject: Clarification of the operating results for the second quarter of 2020 To: Directors and Managers of the Stock Exchange of Thailand Richy Place 2002 Public

Earth Tech Environment Public Company Limited Page 1 17th August 2020 Subject Management Discussion and Analysis Financial Performance for the quarter ended 30th June 2020 To President The Stock

Earth Tech Environment Public Company Limited 11th November 2020 Subject Management Discussion and Analysis Financial Performance for the quarter ended 30th September 2020 To President The Stock

Discussion and Analysis for the third quarter 2020 of Seven Utilities and Power Public Company Limited To: The President The Stock Exchange of Thailand Seven Utilities and Power Public Company Limited (“the

13 November 2020 Subject Management Discussion and Analysis for the Nine months ended September 30, 2020 To The President The Stock Exchange of Thailand Do Day Dream Public Company Limited (the

Manager The Stock Exchange of Thailand The Board of Director’s meeting No. 6/2020 of General Engineering Public Company Limited (“the Company”) held on November 16, 2020 has approved and verified the