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

ที่ กตพ Ref. DBP. 107 / 2018 August 14, 2018 Subject : Clarification on Operating Results for the 3-month Period and 6-month Period ending June 30, 2018 To : President The Stock Exchange of Thailand

654 3323 No. PACE 201711/01 Date: 14 November 2017 Subject: Explanation of the Operating Results for the Third Quarter of the Year 2017 (Q3 2017) Changing over 20% To: The President The Stock Exchange

654 3323 No. PACE IR2018/007 Date: 9 February 2018 Subject: Explanation of the Operating Results for the Third Quarter of the Year 2017 (Q3 2017) Changing over 20% To: The President The Stock Exchange

beginning of this year, the Company had gain on exchange rate while the Thai Baht value appreciated against US Dollar and the Company had loss on exchange rate in last year As a result of above reason, the

-517-0109-14 Fax 66-2-5170529 February 27, 2017 Subject Management Discussion and Analysis for the year ended December 31, 2016 To Managing Director of Stock Exchange of Thailand Table of Financial Ratio

Stock Exchange of Thailand Filter Vision Public Company Limited and its subsidiaries (Hereinafter called “The Group”) would like to submit Management’s discussion and analysis for the Year 2017 with the

Ratio 1 (times) 1.63 1.54 1.81 Quick Ratio 2 (times) 0.53 0.37 0.57 Cash Ratio 3 (times) 0.67 0.68 0.80 Account Receivable Turnover 4 (times) 17.65 17.27 17.78 Average Collection Period 5 (days) 20 21 20

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