October 11, 2019 Re: Clarification of the operating results of company and its subsidiaries for the year ended as at December 31, 2018 To: Boards and Managements The Stock Exchange of Thailand K.C

Page 1 of 4 No. RJH – SET 16/2019 11 November 2019 Subject : Management’s Discussion and Analysis for the 3rd Quarter of 2019 To : The President The Stock Exchange of Thailand Rajthanee Hospital

August 11, 2020 Subject: Management’s Discussion and Analysis for the second Quarter of 2020 To: The President The Stock Exchange of Thailand (SET) DOD Biotech Public Company Limited and its subsidiaries

Discussion and Analysis Quarterly Ending September 30, 2019 To : The President The Stock Exchange of Thailand The Board of Directors meeting of Ratchaphruek Hospital Public Company Limited (the Company) No. 4

Translation CEN 016-2020 August 14, 2020 Subject Management Discussion and Analysis for business operation of Quarter 2/2020 To The Manager and President The Stock Exchange of Thailand Capital

performance and profitability for the year 2020 are as follows: Cost to revenue from transmission and telecommunication tower ratio decreased by 52.31% YoY resulting from decreasing in revenue and

29_MDA Q3_62 EN -Translation- No. ECF2 041/2019 November 14, 2019 Subject: Management Discussion and Analysis of the 3rd quarter ended September 30, 2019 To President The Stock Exchange of Thailand

3rd Quarter of 2019 and 9-months period ending 30 September 2019 To The President The Stock Exchange of Thailand We, ZEN Corporation Group Public Company Limited (“the Group”), are pleased to provide

selling expenses to revenue ratio was on the back of the expenses related to preparation for the planned listing to the Stock Exchange of Thailand. Administrative expenses In the three-month period ended

73 1 / 4 Pef. MD 042/2017 15th August 2017 Subj Management Discussion and Analysis (MD&A) Q2/2017 Dear Managing Director of Stock Exchange of Thailand We, Patum Rice Mill and Granary Public Company