transaction is below 15 percent and such transaction is not classified as a related party transaction. Please be informed accordingly. Sincerely yours, – Signature – (Mr.Chuangchai Nawongs) Chief Executive

Public Company Limited -Signature- (Mr. Anit Osathanugrah) Director and Chief Executive Officer

. Narakorn Ratchapolsitte) Chief Executive Officer/Managing Director

. Metalsheet Public Company Limited (Mr.Niphon Charoenkit) Chief executive officer KCM - MDA.Q2-60 TH-EN_edited

Managing Director, Chief Financial Officer

. Tradsin Chongussayakul ) Chief Executive Officer and Acting Managing Director T Engineering Corporation Public Company Limited

sincerely, (Mr. Chalerm Harnphanich M.D.,Ph.D.) Chief Executive Officer บรษิทั บางกอก เชน ฮอสปิทอล จ ากดั (มหาชน) Bangkok Chain Hospital Public Company Limited. 44 หมู ่4 ถ.แจง้วฒันะ ต.ปากเกร็ด อ.ปากเกร็ด จ.น

% respectively. Please be acknowledged Your sincerely, ( Mr.Boonchu Wongpakdee ) Deputy Managing Director, Chief Financial Officer

Charuwat) Director and Chief Executive Officer

informed accordingly. Sincerely Yours, Demeter Corporation Public Company Limited -Signature- (Mr. Teerawit Charuwat) Director and Chief Executive Officer