President The Stock Exchange of Thailand The Company wishes to present the Management Discussion & Analysis (MD&A) on the operating and financial status for the 2nd quarter of 2020. The MD&A would enable the

MD & A_Q2_63 August 11, 2020 Subject : Management Discussion and Analysis for the second quarter ended 30 June 2020 (reviewed) To : Director and Manager The Stock Exchange of Thailand Ratchthani

(Translation) Ref.No.LEE 11/2020 11 August, 2020 Subject : Management Discussion and Analysis for the second quarter ended June 30, 2020 To : President of The Stock Exchange of Thailand We submit

T.K.S. TECHNOLOGIES 1 March 2021 Re: Management Discussion and Analysis for the period ended 31 December 2020 To: President The Stock Exchange of Thailand T.K.S. Technologies Public Company Limited

Limited and its subsidiaries Ref. PDI/BK-BS-022/2020 May 12, 2020 Re: Management Discussion and Analysis (MD&A) For the three-month period ended March 31, 2020 To: President The Stock Exchange of Thailand

1 28 May 2020 Subject: Explanation of operating result in the financial statement ended 31 March 2020 To: Directors and Managers of the Stock Exchange of Thailand With reference to the audited

MD & A - Q3-62 _สอบทาน__EN November 7, 2019 Subject : Management Discussion and Analysis For the second quarter ended 30 September 2019 (reviewed) To : Director and Manager The Stock Exchange of

/FS_PAGE_0551_E_2018-03-16_6671089902.pdf 20093956.pdf Stock Exchange of Thailand as follow: 1. Total sales revenue and service was 52.38 million baht consisting of Selling on steel products in the amount of 51.59

Powertech Company Limited (“IGP”), which 51% shares owned https://market.sec.or.th/public/idisc/Views/Download?FILEID=dat/news/201909/19089007.pdf 20093956.pdf Stock Exchange of Thailand as follow: 1. Total

collaterals in margin accounts have experienced price volatility and declines due to various factors. When stock prices drop, the value of the collaterals is subsequently affected, leading brokers to forcibly