Ref: FASET 01/2562 February 26, 2019 Subject: Report the operating result for the year ended December 31, 2018 To: President of the Stock Exchange of Thailand Seamico Securities Public Company

Page 1 of 2 SET 007/2020 12 August 2020 Subject Management Discussion and Analysis for the second quarter 2020 To The President of the Stock Exchange of Thailand The Company would like to provide

1 (Translation) MD. 063/2018 May 9 , 2018 Re: Management Discussion and Analysis For the Operating Results ended March 31, 2018 To: President The Stock Exchange of Thailand Management Discussion and

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. DOD2019/004 February 20, 2019 Subject: Management’s discussion and analysis of the Company’s operating results for the year 2018 period To: President The Stock Exchange of Thailand DOD Biotech Public

and Analysis for Year Ending December 31, 2018 To : The President The Stock Exchange of Thailand The Board of Directors meeting of Ratchaphruek Hospital Public Company Limited (the Company) No. 1/2019

Discussion and Analysis for Year Ending December 31, 2019 To : The President The Stock Exchange of Thailand The Board of Directors meeting of Ratchaphruek Hospital Public Company Limited (the Company) No. 1

: President The Stock Exchange of Thailand CH. Karnchang Public Company Limited (“the Company”) and its subsidiaries would like to clarify the consolidated operating result and financial position for the year

Analysis Quarterly Ending March 31, 2019 To : The President The Stock Exchange of Thailand The Board of Directors meeting of Ratchaphruek Hospital Public Company Limited (the Company) No. 2/2019 dated May 11

: President The Stock Exchange of Thailand CH. Karnchang Public Company Limited (“the Company”) and its subsidiaries would like to clarify the consolidated operating result and financial position for the three