Understanding re: the Feasibility Study on the Acquisition of CR Solar Company Limited and (2) Related Parties Transaction. Attn: Director and Manager The Stock Exchange of Thailand Enclosure: 1. Information

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

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

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

Extraordinary General Meeting of the Shareholders No. 1/ 2 5 6 1 , Plans for listing CAZ (Thailand) Co., Ltd. on the Market of Alternative Investment (mai) – Revised 2 Attention The President The Stock Exchange

., the subsidiary of the Company, and change in the accounting policy regarding the record of the land appraisal To: President The Stock Exchange of Thailand Attachment: Information Memorandum on the Asset

% Other components of equity 189 196 -3% Deduct: Treasury stock (114) 0 - Total equity of parent Company's shareholders 1,145 1,612 -29% Non-controlling interests 46 0 - Total Shareholders' Equity 1,191