1 / 2 IR.021/2019 13 November 2019 Re: Notification of the changes of the Profit and Loss Statement To President The Stock Exchange of Thailand We, T Engineering Corporation Public Company Limited

-9320 Ref: PLC 2017/015 September 25, 2017 Subject: Disclosure of Connected Transaction Information Regarding Renew land rental agreement To: The President of the Stock Exchange of Thailand Panjawattana

Notification of the Capital Market Supervisory Board No. TorChor. 21/2551 Re: Rules on Connected Transactions and the Notification of the Board of Governors of the Stock Exchange of Thailand Re: Disclosure 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

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 / 2 IR.017/2019 13 August 2019 Re: Notification of the changes of the Profit and Loss Statement To President The Stock Exchange of Thailand We, T Engineering Corporation Public Company Limited (the

1 / 2 IR.017/2018 14 August 2018 Re: Notification of the changes of the Profit and Loss Statement To President The Stock Exchange of Thailand We, T Engineering Corporation Public Company Limited (the

1 / 2 IR.023/2018 13 November 2018 Re: Notification of the changes of the Profit and Loss Statement To President The Stock Exchange of Thailand We, T Engineering Corporation Public Company Limited

. TorChor. 21/2551 Re: Rules on Connected Transactions and the Notification of the Board of Governors of the Stock Exchange of Thailand Re: Disclosure of Information and Other Acts of Listed Companies

-9320 Ref: PLC 2020/002 February 3, 2020 Subject: Disclosure of Connected Transaction Information Regarding Area rental agreement To: The President of the Stock Exchange of Thailand Panjawattana Plastic