, 2017. Please be informed accordingly. Sincerely yours, T.K.S. Technologies Public Company Limited (Mr. Somkid Wekinvattanased) Managing Director 1 Disclaimer: The English translation of this document is

Director 1 Disclaimer: The English translation of this document is prepared solely for reference for non-Thai shareholders of the Company. It should neither be relied upon as the definitive nor the official

accordingly. Sincerely yours, T.K.S. Technologies Public Company Limited (Mr. Somkid Wekinvattanased) Managing Director 1 Disclaimer: The English translation of this document is prepared solely for reference

subsidiary, please kindly find the following attachment. Please kindly be informed accordingly. Yours faithfully, Mr. Geza Emil Perlaki Managing Director For period ended 31 December 2018 MANAGEMENT DISCUSSION

., namely (1) Mr. Voraphot Chanyakomol and (2) Ms. Piyaporn Phanachet Group B., namely (1) Mr. Uthai Uthaisangsuk and (2) Mr. Nopporn Boonthanom Power of the Directors : A director of Group A and a director

Page 1 of 3 GEL.CS.003/2562 28 February 2019 Subject: Management Discussion and Financial Analysis for the operating results as at December 31, 2018 To: Director and Manager The Stock Exchange of

Ref. No. 1908/028EN June 13, 2019 Subject Management Discussion and Analysis for Q2/2019 (Ending June 30, 2019) To Director and Manager of the Stock Exchange of Thailand Ubis (Asia) Public Company

Page 1 of 3 GEL.CS.015/2561 15 May 2018 Subject Management Discussion and Financial Analysis for the operating results of the first quarter of 2018, ended 31 March 2018 To Director and Manager The

หนังสือแสดงการรับทราบความผิด 14 August 2018 Subject : Management Discussion and Analysis of the second quarter 2018 ended 30 June 2018 Attn. : Director and Manager The Stock Exchange of Thailand

. Management Discussion and Analysis 3.1 Sales and service income from Property development for the third quarter of 2018 has decreased by Baht 88.54 million or 45.67% when compared to the same quarter of 2017