[COMPANY NAME] Ref.: EFORL IR007/2020 March 4, 2020 Subject: Management Discussion and Analysis Yearly Ending 31 December, 2019 To President The Stock Exchange of Thailand 1. Overview financial

May 10, 2018 Re : Management Discussion and Analysis (MD&A) For Quarter 1 / 2018 Attn : President The Stock Exchange of Thailand Baan Rock Garden Public Company Limited wishes to clarify the Company’s

/2019 February 15 , 2019 Re: Management Discussion and Analysis (MD&A) For Year 2018 Attn: President The Stock Exchange of Thailand Baan Rock Garden Public Company Limited wishes to clarify the Company’s

November 13, 2019 Re : Management Discussion and Analysis (MD&A) For Quarter 3 / 2019 Attn : President The Stock Exchange of Thailand Baan Rock Garden Public Company Limited wishes to clarify the Company’s

1 - TRANSLATION - KT/PB (Q-Con) 001/2020 February 13, 2020. Attention Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis for year 2019 Quality Construction

/ 2020 February 21 , 2020 Re: Management Discussion and Analysis (MD&A) For Year 2019 Attn: President The Stock Exchange of Thailand Baan Rock Garden Public Company Limited wishes to clarify the Company’s

15 May 2017 Subject: Management Discussion & Analysis for Quarter 1 ending 31 March 2017 To: The President The Stock Exchange of Thailand Harn Engineering Solutions Public Company (“The Company

August 10, 2017 Re : Management Discussion and Analysis (MD&A) For Quarter 2 / 2017 Attn : President The Stock Exchange of Thailand Baan Rock Garden Public Company Limited wishes to clarify the Company’s

November 9, 2017 Re : Management Discussion and Analysis (MD&A) For Quarter 3 / 2017 Attn : President The Stock Exchange of Thailand Baan Rock Garden Public Company Limited wishes to clarify the Company’s

10 November 2017 Subject: Management Discussion & Analysis for 3th quarter ending 30 September 2017 (Rev1) To: The President The Stock Exchange of Thailand Harn Engineering Solutions Public Company