Ref.No.IVL004/10/2017 10th October 2017 President The Stock Exchange of Thailand Subject: Acquisition of 100 percent of the Film and Polymer business of DuPont Teijin Indorama Ventures Public Company Limited

661 6664-5 www.indoramaventures.com Ref.No.IVL002/07/2019 30th July 2019 President The Stock Exchange of Thailand Subject: Acquisition of Speciality Fibers Business of Sinterama Indorama Ventures Public

661 6664-5 www.indoramaventures.com Ref.No.IVL005/06/2018 29 th June 2018 President The Stock Exchange of Thailand Subject: Acquisition of Tire-Cord Business in the Czech Republic and Slovakia Indorama

661 6664-5 www.indoramaventures.com Ref.No.IVL002/12/2018 11th December 2018 President The Stock Exchange of Thailand Subject: Acquisition of Airbag Yarns Business in Germany and Mexico Indorama

661 6664-5 www.indoramaventures.com Ref.No.IVL003/12/2018 20th December 2018 President The Stock Exchange of Thailand Subject: Acquisition of Specialty PET Business in Germany Indorama Ventures Public

661 6664-5 www.indoramaventures.com Ref.No.IVL004/12/2018 24th December 2018 President The Stock Exchange of Thailand Subject: Acquisition of PET Recycling Assets in USA Indorama Ventures Public Company

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 IR.013/2018 19 July 2018 Re: The Information of a Disposition of Assets To President The Stock Exchange of Thailand T Engineering Corporation Public Company Limited (the “Company”) would like

MD & A_Q2_63 August 11, 2020 Subject : Management Discussion and Analysis for the second quarter ended 30 June 2020 (reviewed) To : Director and Manager The Stock Exchange of Thailand Ratchthani

(Translated) August 11, 2020 Ref FSS 120/2020 Subject: Clarification of Company’s Operating Result for the six-month period ended June 30, 2020 To The President and Director The Stock Exchange of