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

Eng_MD&A Final Q3'19 November 13, 2019 Ref: SET-2019-011 Re: Management Discussion and Analysis for Quarter 3’ 2019 Attn. to: President The Stock Exchange of Thailand Filter Vision Public Company

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

Management Discussion and Analysis (MD&A) 2019 Page 1/8 Management Discussion and Analysis (MD&A) 2019 Overview and Factors Affecting Future Performance 2019 was considered a challenging year for the

DCON PRODUCTS PUBLIC Co.,Ltd. and Subsidiaries Company Management’s Discussion and Analysis (MD&A) For the Year 2019 1. Revenue,Gross Profit & Net Profit Unit :M.Bht Year 2019 Year 2018 Year 2017 1

(Translation) Ref.No.LEE 01/2020 27 February, 2020 Subject : Management Discussion and Analysis for the year ended December 31, 2019 To : President of The Stock Exchange of Thailand We submit

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