-Translation- Ref. WINNER 006/2020 February 27, 2020 Subject: Management Discussion and Analysis (MD & A) for the year 2019 (Revised) To: The President The Stock Exchange of Thailand 1. Analysis of

1 Zen Corporation Group Public Company Limited 662 Soi Onnuch 17, Suanluang, Bangkok 10250 THAILAND. Tel: 02-0195000 8 May 2020 No. ZEN 2563-011 Subject Management Discussion and Analysis for the 1st

Ref. DBP. 066 / 2020 May 11, 2020 Subject : Clarification on Operating Results for the 1st Quarter ending March 31, 2020 To : President The Stock Exchange of Thailand Diamond Building Products Public

Sakhon 74110 Thailand. E-mail: ir@aienergy.co.th บริษัท เอไอ เอนเนอร์จี จ ำกดั (มหำชน) AI Energy Public Company Limited ทะเบียนเลขที่ 0107556000311 AIE 133/2020 May 14th, 2020 Subject: Management’s

Management Discussion and Analysis, Q1/2020 Page 1/ 7 Jaymart Public Company Limited - Translation - Ref: IR63/007 15 May 2020 Subject: Management Discussion and Analysis Quarter 1/2020 ended 31

-Translation- Ref. No. PorBor. 029 / 2020 19 June 2020 Subject: Entering into Transaction of Disposing of Subsidiary’s Machines for the Debenture Debt repayment To: President The Stock Exchange of

1 Zen Corporation Group Public Company Limited 662 Soi Onnuch 17, Suanluang, Bangkok 10250 THAILAND. Tel: 02-0195000 10 August 2020 No. ZEN 2563-016 Subject Management Discussion and Analysis for the

แบบแสดงรายการข้อมูลสำหรับการเสนอขายหลักทรัพย์ (แบบ 69-1) 1 No. WHAUP-CFR-A-20004 August 11, 2020 Attention: Managing Director – Stock Exchange of Thailand Subject: Report of Financial Results for the

(English translation) No. BGRIM 17/2563 17 September 2020 Subject: Information Memorandum on Asset Acquisition from Investment in the Development of 7 Combined Cycle Cogeneration Plants To: President

Microsoft Word - MD&A Q2-2563_Eng12 Nov 2020 Nov 12, 2020 Subject Management Discussion and Analysis for the period of three months and the period of 1st half ended 30th September 2020 To President