accordingly. Yours faithfully, For and on behalf of Diamond Building Products Public Company Limited (Mr. Satid Sudbuntad) Chief Executive Officer - 1 - DIAMOND BUILDING PRODUCTS PUBLIC COMPANY LIMITED AND ITS

Sudbuntad) Chief Executive Officer Company Secretary Office Tel. +66 3622 4171-8 Ext. 314 Fax. +66 3622 4187 - 1 - DIAMOND BUILDING PRODUCTS PUBLIC COMPANY LIMITED AND ITS SUBSIDIARY MANAGEMENT DISCUSSION AND

Analysis (MD&A) as attached herewith. Please be informed accordingly. Yours faithfully, For and on behalf of Diamond Building Products Public Company Limited (Mr. Satid Sudbuntad) Chief Executive Officer - 1

Sudbuntad) Chief Executive Officer - 1 - DIAMOND BUILDING PRODUCTS PUBLIC COMPANY LIMITED AND ITS SUBSIDIARY MANAGEMENT DISCUSSION AND ANALYSIS (For the Consolidated Financial Statements of the 2nd Quarter

Sudbuntad) Chief Executive Officer - 1 - DIAMOND BUILDING PRODUCTS PUBLIC COMPANY LIMITED AND ITS SUBSIDIARY MANAGEMENT DISCUSSION AND ANALYSIS (For the Consolidated Financial Statements of the 3rd Quarter

attached herewith. Please be informed accordingly. Yours faithfully, For and on behalf of Diamond Building Products Public Company Limited (Mr. Satid Sudbuntad) Chief Executive Officer Company Secretary

the January 2019. In this regard, the Board of Directors has authorized the executive committee or the Chief Executive Officer or the person entrusted by executive committee or the Chief Executive

authorized the executive committee or the Chief Executive Officer or the person entrusted by executive committee or the Chief Executive Officer to have an authority to consider, decide, amend or change rules

portion of the Company's shareholders of THB 1,163 million or -47.0%. Please be informed accordingly. Yours sincerely, (Mr.Teerawut Pangviroonrug) Chief Executive Officer 6 7

the Company's shareholders of THB 1,163 million or -47.0%. Please be informed accordingly. Yours sincerely, -Teerawut Pangviroonrug - (Mr.Teerawut Pangviroonrug) Chief Executive Officer