Ref. DBP. 066 / 2020 May 11, 2020 Subject : Clarification on Operating Results for the 1st Quarter ending March 31, 2020 To : President The Stock Exchange of Thailand Diamond Building Products Public

ที่ กตพ Ref. DBP. 108 / 2019 August 13, 2019 Subject : Clarification on Operating Results for the 2nd quarter and 6-month Period ending June 30, 2019 To : President The Stock Exchange of Thailand

Ref. DBP. 153 / 2019 November 11, 2019 Subject : Clarification on Operating Results for the 3rd quarter and 9-month Period ending September 30, 2019 To : President The Stock Exchange of Thailand

%) 3.Others Income 29.91 21.76 14.40 4.Income from sales unused land 132.59 5.Selling &Admin Expenses , Interest Exp. 205.96 210.06 236.38 6.Corporate Tax 59.92 35.39 45.42 7.Net Profit Before Reserve

President The Stock Exchange of Thailand The Company wishes to present the Management Discussion & Analysis (MD&A) on the operating and financial status for the 2nd quarter of 2020. The MD&A would enable the

10 May 2018 Re Explanation and analysis of the Management for the 1st quarter of 2018 ended 31 March 2018 To Director and Manager, Stock Exchange of Thailand Whereas the Meeting No. 2/2561 of the

10 August 2017 Re Explanation and analysis of the Management for the 2nd quarter of 2017 ended 30 June 2017 To Director and Manager, Stock Exchange of Thailand Whereas the Meeting No. 3/2560 of the

26th February 2020 Subject: Transaction to acquire land from a related party. To: President The stock Exchange of Thailand According to the resolution of Board of Directors meeting of S.Kijchai

same quarter last year and below the Bank of Thailand’s (BOT) target range of 1-3 percent. Core inflation was 0.13 percent, down from 0.54 percent in the same quarter last year. The average exchange rate

last year, resulted from profit and loss from exchange rate and profit from selling unused assets. 3. Adminstrative expenses On 1st Quarter, 2019, the Group’s administrative expense total amount of 21.86