-1- AIT (VP-SEC) 017E/2022 May 12, 2022 Subject: Management's Discussion and Analysis of Operating Results for Q1-2022 To: The President of the Stock Exchange of Thailand Summary of Operations Q1

into Material Transactions Deemed as Acquisition or Disposal of Assets, and the Notification of the Board of Governors of the Stock Exchange of Thailand Re: Disclosure of Information and Other Acts of

Meeting No. 1/2019 To President The Stock Exchange of Thailand Enclosure 1. Information Memorandum on the Asset Acquisition (Addendum 1) regarding acquisition of shares of S-TREK (Thailand) Co., Ltd. in the

Agreement which is a Connected Transaction, Appointment of the Independent Financial Advisor and Calling the Extraordinary General Meeting of Shareholders No. 2/2019 (Amended No.2) To The President The Stock

Convening the Extraordinary General Meeting of Shareholders No. 1/2020 To: The President The Stock Exchange of Thailand Enclosure: 1. Debt to Equity Conversion Scheme of Jutha Maritime Public Company Limited

December 2019 To: Managing Director of the Stock Exchange of Thailand Business Overview In 2019, the impact of trade war between the United States and China, together with the global economic slowdown caused

- Translation - LPH/SET/2017/019 August 11, 2017 To : President The Stock Exchange of Thailand The Board of Directors’ Meeting of Ladprao General Hospital Public Company Limited (the “Company” or

Microsoft Word - letY17EMD&A .doc (Translation) 23rd February 2018 Subject: Management Discussion and Analysis (MD&A) of year 2017 To: Managing Director of the Stock Exchange of Thailand Business

Microsoft Word - SET-AIS-CP 007-2020 Acquisition of spectrum license.docx (Translation) AIS-CP 007/2020 19 February 2020 Subject: Acquisition of spectrum license To: President The Stock Exchange of

ที่ กตพ Ref. DBP. 030 / 2019 February 20, 2019 Subject : Clarification on Operating Results of Year 2018 To : President The Stock Exchange of Thailand Diamond Building Products Public Company Limited