1 - TRANSLATION - VS/PC (Q-CON) 016/2018 May 10th , 2018. Attention Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis the first quarter ended 31 March 2018

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

Samutprakarn, Samutprakarn 10280, Thailand Tel. 66 2323 1085..96 Fax. 66 2323 9283 (Translation) 11 May 2018 Subject: Management Discussion and Analysis (MD&A) of Q1/2018 To: Director and manager The Stock

/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

ended of 30 June 2017 Attention: Directors and Manager The Stock Exchange of Thailand Ekachai Medical Care Public Company Limited (the “Company”) would like to clarify on the operating results for the six

ended of 30 June 2017 (Revised) Attention: Directors and Manager The Stock Exchange of Thailand Ekachai Medical Care Public Company Limited (the “Company”) would like to clarify on the operating results