Earth Tech Environment Public Company Limited Page 1 17th August 2020 Subject Management Discussion and Analysis Financial Performance for the quarter ended 30th June 2020 To President The Stock

November 11, 2020 Subject: Management’s Discussion and Analysis for the third quarter of 2020 To: The President The Stock Exchange of Thailand (SET) DOD Biotech Public Company Limited and its subsidiaries

No: AH 03052021 May 17, 2021 Subject: Management Discussion & Analysis (MD&A) for the financial statements of the 1st quarter of fiscal year 2021 ended as of March 31, 2021 To: The President The Stock

The Stock Exchange of Thailand Aapico Hitech Public Company Limited (“the Company”) would like to explain the consolidated financial statements of the Company for the 3rd quarter of fiscal year 2021

No: AH 03052022 May 17, 2022 Subject: Management Discussion & Analysis (MD&A) for the Financial Statements of the 1st Quarter of Fiscal Year 2022 Ended as of March 31, 2022 To: The President The Stock

Stock Exchange of Thailand Aapico Hitech Public Company Limited (“the Company”) would like to explain the consolidated financial statements of the Company for the 1st quarter of fiscal year 2023 ended as

the trading price of investment unit of an ETF fund in an organized market to proximately reflect the value of such investment unit which is calculated from the net asset value of the fund by trading

an ETF fund in an organized market to proximately reflect the value of such investment unit which is calculated from the net asset value of the fund by trading investment units of the ETF fund and

calculated from the net asset value of the fund by trading investment units of the ETF fund and securities which are components of the underlying index of the ETF fund; (13) “ETF fund” means an ETF fund

price of investment units of an ETF fund in an organized market to proximately reflect the value of such investment units which is calculated from the net asset value of the fund, by trading investment