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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

first quarter ended 31 March 2020 (reviewed) To : Director and Manager The Stock Exchange of Thailand Ratchthani Leasing Public Company Limited would like to clarify the management discussion and analysis

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

13 February 2020 Subject Management Discussion and Analysis for the three months ended March 31, 2020 To The President The Stock Exchange of Thailand Do Day Dream Public Company Limited (the “Company

No. ADD 3/2023 22 February 2023 Subject: Management discussion and analysis for the performance for the year ended 31 December 2022 To: President The Stock Exchange of Thailand AddTech Hub Public

decline of 6.14 $/BBL or 10% compared to previous year. This has led to performance from 2018 to 2019 of the refinery industry, including the company’s, to decline. In 2019, the company and its subsidiaries

/5 - Translation - Ref. J62/003 25 February 2019 Subject: Management Discussion and Analysis for Yearly Ending 2018 To: President The Stock Exchange of Thailand Regarding to JAS Asset Public Company

: President The Stock Exchange of Thailand CH. Karnchang Public Company Limited (“the Company”) and its subsidiaries would like to clarify the consolidated operating result and financial position for the six

MDA Q3_2017 (Eng.) November 8, 2017 Subject : Interim Management Discussion and Analysis of Q3/2017 Attention : President of The Stock Exchange of Thailand We attach herewith the financial statements