-//- (Mr. Naris Cheyklin) Chief Executive Officer Company Secretary Department Tel: +66 2050 5555 Ext. 511 Fax: +66 2617 6444-5 1 (Translation) Information Memorandum of Singha Estate Public Company Limited

attached herewith. Please be informed accordingly. Yours faithfully, For and on behalf of Diamond Building Products Public Company Limited (Mr. Satid Sudbuntad) Chief Executive Officer Company Secretary

quarter of 2019 (a copy in Thai and English) Please be informed accordingly. Sincerely yours, (Mr. Aloke Lohia) Group CEO Indorama Ventures Public Company Limited Company Secretary Tel: +662 661 666 Fax

Capital LLP ผู้เก็บรักษาทรัพย์สนิ (Depositary) Northern Trust Fiduciary Services (Ireland) Limited ผู้ดูแลงานดา้นปฏิบัติการและนายทะเบียน (Administrator, Registrar, Transfer Agent and Secretary) Northern

นายทะเบียน (Administrator, Registrar, Transfer Agent and Secretary) Northern Trust International Fund Administration Services (Ireland) Limited ผู้สอบบัญชี (Auditor) Deloitte Dublin, Ireland แหล่งข้อมูล

ดูแลงานดา้นปฏิบัติการและนายทะเบียน (Administrator, Registrar, Transfer Agent and Secretary) Northern Trust International Fund Administration Services (Ireland) Limited ผู้สอบบัญชี (Auditor) Deloitte

informed accordingly. Yours faithfully, For and on behalf of Diamond Building Products Public Company Limited (Mr. Satid Sudbuntad) Chief Executive Officer Company Secretary Office Tel. +66 3622 4171-8 Ext

quarter of 2020 (a copy in Thai and English) Please be informed accordingly. Sincerely yours, Mr. Aloke Lohia Group CEO Indorama Ventures Public Company Limited Company Secretary Tel: +662 661 6661 Fax

quarter of 2020 (a copy in Thai and English) Please be informed accordingly. Sincerely yours, (Mr. Aloke Lohia) Group CEO Indorama Ventures Public Company Limited Company Secretary Tel: +662 661 6661 Fax

first opportunity but not later than two years as from the effective date of this Notification. Notified this 1st day of October 2018. (Mr. Rapee Sucharitakul) Secretary-General Office of the Securities