subsidiary. Kindly be informed accordingly. Yours sincerely, Malee Leelasiriwong (Mrs. Malee Leelasiriwong) Director

Managing Director Authorized to sign on behalf of the company

Microsoft Word - ชี้แจงเกิน20% Q3'61-EN Date : November 9, 2018 Subject : The Explanation to SET concerning the operating result for Q3/2018 more than 20% Attention : The Director and Manager of the

จดหมายชี้แจงq361e November 12, 2018 The Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis for three month Ending 30 September 2018 Summary on Third Quarter

. Boondee Amnuayskul) Chief Executive Officer and Managing Director Translation

. Siriwan Chamnannarongsak Finance Director

Ujjin ) Director and Chief Executive Officer

informed accordingly. Sincerely yours, T.K.S. Technologies Public Company Limited -Signed- Mr.Somkid Wekinvattanasaed Managing Director

September 3rd,2019 To : Managing Director The Stock Exchange of Thailand Re : The acquisition of investment in Thonburi Healthcare Group PLC. The board of directors of Ramkhamhaeng Hospital Public Co

the investors. Yours sincerely, (Mr. Somboon Fusriboon) Managing Director