Miss Nawarat Sukcharoensin Miss Nawarat Sukcharoensin, in collaboration with her brother (Mr. Surawut Sukcharoensin who was Director, Executive Director, and Chief Strategy Officer of L.P.N

Mrs. Malatee Sukcharoensin Mrs. Malatee Sukcharoensin, the mother of Mr. Surawut Sukcharoensin (who was Director, Executive Director, and Chief Strategy Officer of L.P.N. Development Public Company

through the purchase of equity in the Target Company to the Executive Committee; and/or Chief Executive Officer; and/or any persons delegated by the Executive Committee and/or the Chief Executive Officer to

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

29 January 2019 assigned the executive committee or Chief Executive Officer to be authorized to perform any actions related to the disposal of Land and Buildings to Double Tree Holding , including to

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

informed accordingly. Yours faithfully, For and on behalf of Diamond Building Products Public Company Limited (Mr. Satid Sudbuntad) Chief Executive Officer Company Secretary Office Tel. +66 3622 4171-8 Ext

17 “Undertaking Transaction”). (The details of Undertaking Transaction appear in 1.3.2 “Undertaking Transaction”)  Approved the Authority of Chief Executive Officer in relation to the disposition of

Executive Officer

. Songwut Sakchalathorn Chief Executive Officer