companies certified by CAC. 4  The Stock Exchange of Thailand : the record of listed companies with corporate sustainable development "Thai sustainability Investment 2021" included: SET and mai listed

October 30, 2020 Subject: The Management Discussion and Analysis for the year ended 31st December 2019 To: President The Stock Exchange of Thailand Well Graded Engineering Public Company Limited (“the

ที่บชง Page 1 of 4 Ref. Bor Chor Ngor 0140 /2020 13 May 2020 Subject: Management Discussion and Analysis for the First Quarter ended 31 March 2020 To President The Stock Exchange of Thailand Quality

President The Stock Exchange of Thailand Rajthanee Hospital Public Company Limited (“the Company”) would like to clarify the operating results of the Company and its subsidiaries for the 2nd quarter of 2018

MMS-AC60/029 9 August 2017 Subject: Discussion and analysis of the operating results for the second quarter of 2017, ending 30 June 2017 To: The President of the Stock Exchange of Thailand Matching

-Translation- 1 -Translation- Ref. NCH 006/2019 February 27, 2019 Subject: Management’s Discussion and Analysis for the year 2018 Attention: President The Stock Exchange of Thailand N.C. Housing Plc

Page 1 of 4 No. RJH – SET 10/2018 12 November 2018 Subject : Management Discussion and Analysis for the 3rd quarter of 2018 ending September 30, 2018 To : The President The Stock Exchange of Thailand

PAGE 1 OF 3 GEL.CS.001/2564 1 March 2021 Subject: Management Discussion and Financial Analysis for the operating results of the year 2020 December 31, 2020 To: Director and Manager The Stock Exchange

MD&A Q4_2018 (Eng.) February 21, 2019 Subject : Yearly Management Discussion and Analysis of 2018 Attention : President of The Stock Exchange of Thailand We attach herewith the financial statements

-Translation- Ref. No. PorBor. 050 / 2019 December 27, 2019 Subject: Entering into Transaction of Acquisition of Associate Company’s ordinary shares To: President The Stock Exchange of Thailand