-1- AIT (VP-SEC) 017E/2020 May 11, 2020 Subject: Management's Discussion and Analysis of Operating Results for Q1-2020 To: The President of The Stock Exchange of Thailand Summary of Operations Q1

-1- AIT (VP-SEC) 026E/2020 August 10, 2020 Subject: Management's Discussion and Analysis of Operating Results for Q2-2020 To: The President of The Stock Exchange of Thailand Summary of Operations Q2

asset 1 set of R&D analysis equipment at average 1.5 years of lifetime and 0.25 of used years Transaction date July 2017 Transaction amount NTD 661,926 approximately Baht 729,177.68 Pricing policy At Book

-1- AIT (VP-SEC) 016E/2021 August 10, 2021 Subject: Management's Discussion and Analysis of Operating Results for Q2-2021 To: The President of the Stock Exchange of Thailand Summary of Operations Q2

-1- AIT (VP-SEC) 022E/2021 November 9, 2021 Subject: Management's Discussion and Analysis of Operating Results for Q3-2021 To: The President of the Stock Exchange of Thailand Summary of Operations Q3

-1- AIT (VP-SEC) 022E/2022 August 11, 2022 Subject: Management's Discussion and Analysis of Operating Results for Q2-2022 To: The President of the Stock Exchange of Thailand Summary of Operations Q1

investors and eligible to analyze investment related to the value or appropriateness for trading or investing in capital market products whether or not the analysis is fundamental or technical, in conjunction

property valuer approved by the Office; (b) sensitivity analysis which has been audited by an auditor or a financial advisor approved by the Office, or any other persons approved by the Office. Such analysis

certified by a property valuer approved by the Office; (b) sensitivity analysis which has been audited by an auditor or a financial advisor approved by the Office, or any other persons approved by the Office

providing investment consultation to investors and being allowed to analyze investment, relating to the value and appropriateness for trading or investing in capital market product whether or not the analysis