three -month period ended March 31, 2020 Attention: President The Stock Exchange of Thailand Further to our submission of the report and the financial statements for the three-month period ended March 31

No No. CC20200806ELE Aug 13, 2020 Re: Clarification of the changes in operation performance for the second quarter and the first half ended 30 June 2020 Attn: The President The Stock Exchange of

@halcyon.co.th No. CS-2563/014 14 August 2020 Subject: Management Discussion and Analysis for the 6-Month Period Ended 30 June 2020 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology

- Translation - Ref : LPH/SET 2020/012 August 14, 2020 Subject : Clarification on the Operating Results for the 3-month and 6-month period ended June 30, 2020 (Q2/2020) To : President The Stock

- Translation - PorBor. 044 / 2020 August 14, 2020 Subject: Clarification of operating for the period ended June 30, 2020 To: President The Stock Exchange of Thailand Rich Asia Corporation Public

หนา้ 1 จาก 1 Translation May 13, 2020 Subject: Management explanation and analysis for Year ended 31 March 2020 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe Public Company

Manager of The Stock Exchange of Thailand Union Petrochemical Public Company Limited and its subsidiaries ("the Company") would like to clarify the operating results for the Quarter1/2020 ended March 31

(Translation) LEE 12/2019 11 November 2019 Subject : Management Discussion and Analysis for the third quarter ended September 30, 2019 To : President of The Stock Exchange of Thailand We submit

/2021 08:42 Management Discussion and Analysis for the Year Ended 31 Dec 2020 (Revised PDF File) 01/03/2021 08:17 Management Discussion and Analysis for the Year Ended 31 Dec 2020 16/11/2020 08:24

ACC6505/003 May 13, 2022 Subject: Clarification of operating results for the first quarter of 2022 ended March 31, 2022 Dear Directors and Managers Stock Exchange of Thailand According to Advanced