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

September 30, 2019 To The President The Stock Exchange of Thailand Management’s Discussion and Analysis Consolidated Financial Statements For nine months ended September 30, 2019 Overall Group Performance

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

Ref. DBP. 068 / 2018 May 14, 2018 Subject : Clarification on operating results for the 1st Quarter ending March 31, 2018 To : President The Stock Exchange of Thailand Diamond Building Products Public

Governors of The Stock Exchange of Thailand Re: Disclosure of Information and Other Acts of Listed Companies Concerning the Acquisition and Disposition of Assets, 2004 (including additional amendments) (the

Stock Exchange of Thailand Reference: Letter No. OP. 435/ 2019 dated 12 December 2019 on the entering into the Conditional Share Purchase Agreement for the acquisition of a majority shareholding in PT

สารสนเทศข่าว มติ BOD 5-60 Final 20171126 En No. NDR013/2017 Subject Resolution of the Board of Directors’ Meeting To President The Stock Exchange of Thailand Enclosure 1. Information Memorandum on 2