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 details in Enclosure 1). Please be informed accordingly. Very truly yours, (Mr. Jakkaphong Jakrajutatip) Chief Executive Officer and Managing Director 3 Enclosure 1 Information Memorandum on

area. The Company is expect to get higher income from this business as well. Thus, you have been informed for your acknowledgment. Sincerely Yours, -Singed - (Mr. Suphot Wanna) Chief Executive Officer

informed for your acknowledgement. Sincerely Yours, - Singed - (Mr. Suphot Sirikulphat) Chief Executive Officer Investor Relations Department Jas Asset Public Company Limited

change was due to expense related to staff cost. Please be informed accordingly. Sincerely yours, (Unyarat Pornprakit) Director and Chief Executive Officer Jubilee Enterprise Public Company Limited 3/3

Juwiwat) Chief Executive Officer

informed accordingly. Sincerely yours, (Mr. SomponRoekwibunsi) Chief Executive Officer Authorized to sign on behalf of the Company

Baht 11.76 and short term loan from related party of 25.00 million baht. Please be informed accordingly. Page6of6 Sincerely yours, (Mr. SomponRoekwibunsi) Chief Executive Officer Authorized to sign on