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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

26 February 2019 Subject: Management Discussion and Analysis for the Year Ended December 31, 2018 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology Public Company Limited

February 26, 2020 Subject : Management Discussion and Analysis for year and 4th quarter ended December 31, 2019 Attention : President The Stock Exchange of Thailand 1. Operating Performance 1.1

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year ended May 31, 2017 (audited). To: Director and Manager The Stock Exchange of Thailand World Corporation Public Company Limited ("the Company") would like to report the operating results for the year

) August 9, 2017 Re : Report the operating result for the year ended June 30 ,2017 by more than 20 percent. To : Director and Manager the Stock Exchange of Thailand Approved by the Board of Directors of

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Translation CEN 022-2017 August 11, 2017 Subject Management Discussion and Analysis for business operation of quarter 2/2017 To The Manager and President The Stock Exchange of Thailand For 3 months

November 12, 2017 Subject: Management Discussion and Analysis For the three-month period ended September 30, 2017 To: The President, The Stock Exchange of Thailand Home Pottery Public Company Limited