acknowledgement and dissemination to the public and other investors. Sincerely yours, ( Mr. Tradsin Chongussayakul ) Chief Executive Officer and Acting Managing Director T Engineering Corporation Public Company

Directors. Thus, you have been informed accordingly. Sincerely Yours, - Sign – Mr. Suphot Wanna Chief Executive Officer

sincerely (Mr. Teerawat Srinakarin) Chief Executive Officer

Chief Executive Officer M Vision Public Company Limited

informed for your acknowledgement. Sincerely Yours, (Mr. Suphot Wanna) Chief Executive Officer

.) Chief Executive Officer Revenue Structure Q2/2018 Q2/2017 Difference Cash-Base Revenue (Walk-In) 670.7 501.0 169.7 33.9% Social Security Scheme Revenue 413.3 299.0 114.3 38.2% Universal Coverage Revenue

same period of last year. Please be informed accordingly. Yours sincerely, (Dr. Ungoon Chantanavich) Chief Executive Officer

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

about the Connected Transaction (no.8) - None - Please be informed accordingly Sincerely yours, Dr. Anan Sirimongkolkasem Chairman of Executive Committee

of Executive Committee