Executive, Invitation to Shareholders to propose agenda and nominees’ name for being the Director in advance for the Annual General Shareholder's Meeting in 2019 To The President The Stock Exchange of

Executive, Invitation to Shareholders to propose agenda and nominees’ name for being the Director in advance for the Annual General Shareholder's Meeting in 2019 (ADD) To The President The Stock Exchange of

1 / 4 No.IR.002/2018 22 February 2018 Re: Notification of the changes of the Profit and Loss Statement To: President Stock Exchange of Thailand We, T Engineering Corporation Public Company Limited

with the same period of the previous yearly To: The President The Stock Exchange of Thailand Due to The Manufacturing Production Index (MPI) grew by 1.58 percent from 2016, making Thai economy more

1 / 3 No.IR.003/2019 28 February 2019 Re: Notification of the changes of the Profit and Loss Statement To: President Stock Exchange of Thailand We, T Engineering Corporation Public Company Limited

1 10000/055/2018 20 June 2018 Subject: Notification of the Investment in OKEA AS To: Directors and Manager The Stock Exchange of Thailand Bangchak Corporation Public Company Limited (the “Company

1 Translation CEN 012-2020 May 15, 2020 Subject : Management discussion and analysis for business operation Quarter 1-2020 To : The Manager and President The Stock Exchange of Thailand Summarization

Ref: ACC6401 / 001 March 01, 2021 Subject Clarification of Operating results for the year 2020, Ending December 31, 2020 Attention: Director and Manager The Stock Exchange of Thailand As Advanced

สารสนเทศข่าว มติ BOD 5-60 20171204En No. NDR013/2017 Subject Resolution of the Board of Directors’ Meeting To President The Stock Exchange of Thailand Enclosure 1. Information Memorandum on the

per annum 0.0361 USD per kWh for the remaining from the purchase 4 Calculation for exchange rate is at LAK 291.64 to THB 1 rate as of 17 January 2020 as announced by Bank of Thailand. (Using the