-Translation- M06/002/18 February 28, 2018 Subject Clarification Y2017 Company Performance To The President of the Stock Exchange of Thailand Reference MDX Public Company Limited and its Subsidiaries

-Translation- M06/010/18 August 14, 2018. Subject Clarification of Q2/2018 Company Performance To The President of the Stock Exchange of Thailand Reference MDX Public Company Limited and its

reference. The SEC, Thailand cannot undertake any responsibility for its accuracy, nor be held liable for any loss or damages arising from or related to its use. ------------------------------ Notification of

- Translation – No. M06/001/19 February 25, 2019 Subject Clarification on Y2018 Company Performance To The President of the Stock Exchange of Thailand Reference MDX Public Company Limited and its

-Translation- M06/013/17 August 15, 2017. Subject Clarification of Q2/2017 Company Performance To The President of the Stock Exchange of Thailand Reference MDX Public Company Limited and its

-English translation- CS 7/2018 23 November 2018 Subject: Disposition of investment in White Group Public Company Limited To: President The Stock Exchange of Thailand With reference to the Board of

Public Company Limited To President The Stock Exchange of Thailand Reference GPSC’s letter No. 10040000/021/58 dated on August 26, 2015 regarding the project of Central Utility Plant 4 or Central Utility

Asset Acquisition Transactions Transaction date 10 January 2020 The date in which the Seller has performed all Conditions Precedent and has completed the transfer of assets with reference to the Asset

Assets and Connected Transaction for the Entire Business Transfer and Allocation of Securities to the Specific Investor (Private Placement) To The President The Stock Exchange of Thailand Attachment 1

seriously needed in order to cope with the more dynamic business environment. Management’s Discussion and Analysis (MD&A) for year 2017 7 The raw material reference prices on the world market are that the HMS