of the SEC Office (if any) and/or the conditions for the Stock Exchange of Thailand’s acceptance of securities (if any), including the compliance with such obligations or conditions in the following

required to sumbmit such attachments to the Stock Exchange of Thailand (SET) as well. - 3 - SEC Classification : ใชภ้ายใน (Internal) Part 1 Business Operation and Operating Results 1. Organizational

October 11, 2019 Re: Clarification of the operating results of company and its subsidiaries for the year ended as at December 31, 2018 To: President The Stock Exchange of Thailand K.C. Property

0 ] Ref. No. IVL 001/05/2021 6 May 2021 The President The Stock Exchange of Thailand Subject: Submission of Quarterly Review of Financial Statements and the Management Discussion and Analysis of

หน้าที 1 จาก 5 GEL.CS.019/2560 15 August 2017 Subject Explanation and analysis of management for operating results of the Second Quarter Ended June 30, 2017 To Director and Manager The Stock Exchange

หน้าที่ 1 จาก 5 GEL.CS.024/2560 15 November 2017 Subject Explanation and analysis of management for operating results of the Third Quarter Ended September 30, 2017 To Director and Manager The Stock

Ref. No. IVL 007/05/2018 May 10, 2018 The President The Stock Exchange of Thailand Subject: Submission of Annual Audited Financial Statements and the Management Discussion and Analysis of Indorama

operating results of the third quarter of 2018, ended 30 September 2018 To Director and Manager The Stock Exchange of Thailand The Board of Director’s meeting No. 7/2018 of General Engineering Public Company

Quarter of 2020 To The President The Stock Exchange of Thailand We, ZEN Corporation Group Public Company Limited (“the Group”), are pleased to provide you our management discussion and analysis for the 1st

first six months of 2020 compared to the previous year as follows: • In 1Q20, GLAND Office Leasehold Real Estate Investment Trust (GLANDRT) was dissolved and delisted from Stock Exchange of Thailand