วันที่ 10 พฤษภาคม พ -Translation- 1 Ref. LPN/SorKor/109/2561 10th May, 2018 Re: Report on Financial Analysis in Q1/2018 Dear: President The Stock Exchange of Thailand L.P.N. Development Public Co

1 IDH-AC-000-อส6208/22.00 9 August 2019 Re: Management Discussion and Analysis Operating results for the three-month and six-month period ended 30 June 2019 To: President The Stock Exchange of

number of treasury stock The Corporate Group’s total assets as at December 31, 2018 increased from the end of year 2017 by Baht 120.55 million or 4 percent, due to the net increase in inventory of Baht

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

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

treasury stock The Corporate Group’s total assets as at September 30, 2018 increased from the end of year 2017 by Baht 53.68 million or 1.78 percent, due to a net increase in inventory of Baht 112.31 million

-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

the director of the company and member of the Audit Committee To Director and Manager The Stock Exchange of Thailand Reference is made to the resolutions of the Board of Director Meeting No. 3/2019 of