(Translation) Ref: EIC-AD012/2020 14 May 2020 Subject: Management Discussion and Analysis for the Performance for the three-month period ended 31 March 2020 To: President The Stock Exchange of Thailand The Board

Limited Management Discussion and Analysis for the Quarter Ended on September 30, 2019 5 Cost of service amounted to Baht 7,522 Million representing an increase from the same period of the previous year by

Public Company Limited Management Discussion and Analysis Operating Results for the period year ended 31 December 2018 Page 2 of 4 T.K.S. TECHNOLOGIES \ THB million Y18 Y17 %Chg As Reported (% to Sales

หนังสือแสดงการรับทราบความผิด 27 February 2020 Subject : Management Discussion and Analysis of the year ended 31 December 2019 Attn. : Director and Manager The Stock Exchange of Thailand Encls. : A

period ended June 30, 2017. The Group's sales and net profit totaled Bt3,663.5 million and Bt672.3 million, respectively, compared to Bt3,578.6 million and Bt811.8 million in the second quarter of 2016. A

period ended September 30, 2017. The Group's sales and net profit totaled Bt3,602.0 million and Bt612.4 million, respectively, compared to Bt3,515.2 million and Bt786.0 million in the third quarter of 2016

หนังสือแสดงการรับทราบความผิด 28 February 2018 Subject : Management Discussion and Analysis of the year ended 31 December 2017 Attn. : Director and Manager The Stock Exchange of Thailand Encls. : A

Microsoft Word - MD&A_E Q1_2562 Management Discussion and Analysis: MD&A 1. Operating Results (Company and Subsidiaries) Consolidated revenue for Q1/2019 of 72.9 million baht compared with Q1/2018 of

Microsoft Word - MD&A_E Q1_2561_จัดใหม่ Management Discussion and Analysis: MD&A 1. Company Situation Revenue from the waste treatment business for Q1/2018 slightly increased compare to Q1/2017. The

Eng_MD&A Q2'18 (Translation) August 14, 2018 Ref: SET-2018-016 Re: Management Discussion and Analysis for Quarter 2’ 2018 Attn. to: President The Stock Exchange of Thailand Filter Vision Public