Page 1 of 4 No. RJH – SET 14/2017 10 November 2017 Subject : Management Discussion and Analysis for the 3rd Quarter of 2017 ending 30 September 2017 To : The President The Stock Exchange of Thailand

: Management explanation and analysis for the year ended 31 December 2017 Attention : The President of, The Stock Exchange of Thailand ZIGA Innovation Public Company Limited (“the Company”) would like to clarify

Page 1 of 4 No. RJH – SET 3/2018 26 February 2018 Subject : Management’s Discussion and Analysis for the fourth Quarter of 2017 and year ended December 31, 2017 To : The President The Stock Exchange

Page 1 of 4 No. RJH – SET 8/2019 13 May 2019 Subject : Management’s Discussion and Analysis for the First Quarter of 2019 To : The President The Stock Exchange of Thailand Rajthanee Hospital Public

Page 1 of 4 No. RJH – SET 7/2018 11 May 2018 Subject : Management’s Discussion and Analysis for the 1st quarter of 2018 ending March 31, 2018 To : The President The Stock Exchange of Thailand

-Translation- No. ECF2 024/2018 May 14, 2018 Subject: Management Discussion and Analysis of the year ended March 31, 2018 To President The Stock Exchange of Thailand East Coast Furnitech Public

: Management explanation and analysis for three-month period ended 31 March 2018 Attention : The President of, The Stock Exchange of Thailand ZIGA Innovation Public Company Limited (“the Company”) would like to

: Management explanation and analysis for the 2nd Quarter ended 30 June 2018 Attention : The President of, The Stock Exchange of Thailand ZIGA Innovation Public Company Limited (“ the Company”) would like to

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

Page 1 of 4 No. RJH – SET 9/2020 10 August 2020 Subject : Management’s Discussion and Analysis for the Second Quarter of 2020 To : The President The Stock Exchange of Thailand Rajthanee Hospital