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

more than 20% To : President The Stock Exchange of Thailand Global Service Center Public Company Limited (“the Company”) would like to inform that the Company has already disclosed financial statements

15, 2020 Subject: Management Discussion and Analysis for the 1st Quarter ended 31 March 2020 To: The President The Stock Exchange of Thailand Operating results of S 11 Group Public Company Limited

: Management Discussion and Analysis for the 3rd Quarter ended 30 September 2020 To: The President The Stock Exchange of Thailand Operating results of S 11 Group Public Company Limited (“the Company”) for the

results more than 20% To : President The Stock Exchange of Thailand Global Service Center Public Company Limited (“the Company”) would like to inform that the Company has already disclosed financial

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and strengthen professionalism in financial industry in term of financial knowledge, analytical skills, stock valuation and ethics-based performance which assures the quality of CFA certificate holders