Executive Officer Jubilee Enterprise Public Company Limited 3/3

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 - DIAMOND BUILDING PRODUCTS

. Sincerely yours, (Miss Apinya Jarutrakulchai) Senior Executive Vice President Accounting and Finance Department Tel: 0-2677-7000 Fax: 0-2677-7011-2

Company. Please be informed accordingly, Respectfully yours, -Weera Louwitawas- (Mr. Weera Louwitawas) Chief Executive Officer

this year, increase by THB 87.59 million or 51.45%. Please be informed accordingly. Yours sincerely, (Mrs. Sutida Suriyodorn) Senior Executive Vice President

, income tax decreased 330.94 million baht as a result of a decrease in profit. Please be informed accordingly. Yours sincerely, Mr. Wit Tantiworawong Senior Executive Vice President

, Preecha Nuntnarumit (Mr. Preecha Nuntnarumit) Chief Executive Officer

operating results. Please be informed accordingly. Sincerely yours, (Mr. Peerapong Jaroon-Ek) Chief Executive Officer

year 2017 (December 31st, 2017) mainly from the increasing of business profits from the operating results. Please be informed accordingly. Sincerely yours, (Mr. Peerapong Jaroon-Ek) Chief Executive

and Analysis EXECUTIVE SUMMARY SIGNIFICANT EVENTS Announcement on Corporate Rating and Progress on Corporate Bond Issuance On April 5, 2018, TRIS Rating assigned the company rating of B. Grimm Power PLC