- Translation - IR62/002 26 February 2019 Re: Management Discussion and Analysis (MD&A) for the year 2018 To: President The Stock Exchange of Thailand Overview and Factors Affecting Future Operating Results In

Operating Results of the Company in Q3/2019 Q3/18 Q3/19 9M/18 9M/19 Change +/(-) (THB million) YoY 9M Operating Revenue 215 312 45% 620 911 47% Gross Profit 147 202 37% 420 592 41% EBITDA 62 98 58% 161 284 76

ที่ กตพ Ref. DBP. 030 / 2019 February 20, 2019 Subject : Clarification on Operating Results of Year 2018 To : President The Stock Exchange of Thailand Diamond Building Products Public Company Limited

Ref. DBP. 024 / 2020 February 25, 2020 Subject : Clarification on Operating Results of Year 2019 To : President The Stock Exchange of Thailand Diamond Building Products Public Company Limited and its

Ref. DBP. 025 / 2018 February 21, 2018 Subject : Clarification on operating results of Year 2017 To : President The Stock Exchange of Thailand Diamond Building Products Public Company Limited and its

ที่ กตพ Ref. DBP. 073 / 2019 May 13, 2019 Subject : Clarification on Operating Results for the 1st quarter ending March 31, 2019 To : President The Stock Exchange of Thailand Diamond Building

Ending of the Period 27.13 64.31 CFROE = Cash Flow Return on Equity Increase (Decrease) (%) 52.88% 42.68% The Corporate Group’s net cash from operating activities in the 1st Quarter 2018 was Baht 274.97

Ending of the Period 24.66 70.38 CFROE = Cash Flow Return on Equity Increase (Decrease) (%) 34.75% 42.28% The Corporate Group’s net cash from operating activities in the 2nd Quarter 2018 was Baht 362.65

ที่ กตพ Ref. DBP. 156 / 2018 November 12, 2018 Subject : Clarification on Operating Results for the 3rd quarter and 9-month Period ending September 30, 2018 To : President The Stock Exchange of

= Cash Flow Return on Equity Increase (Decrease) (%) 49.23% 46.60% The Corporate Group’s net cash from operating activities in the 1st Quarter 2020 was Baht 291.08 million, which was higher than the net