Page 1 of 3 No. ACC6411/003 November 11, 2021 Subject: Clarification of the operating results quarter 3/2021 of the year ended September 30, 2021 Attention : Director and Managing Director, The Stock

Page 1 of 3 No. ACC6502/005 February 28, 2022 Subject: Clarification of the operating results Year 2021 of the year ended December 31, 2021 Attention : Director and Managing Director, The Stock

According to the referral from the Stock Exchange of Thailand (SET) and the SEC’s further investigation, (1) Polyplex Corporation Limited (PCL), which directly holds 16.5 percent of PTL shares and

:(1) Every five percent report will apply only to  securities issued by company listed on the Stock Exchange of Thailand (SET);(2) Submission of a copy of report to the SET will no longer be required as

Bangkok, March 10, 2014 ? The SEC jointly with the Association of Investment Management Companies (AIMC), the Stock Exchange of Thailand (SET), the Thai Bankers? Association (TBA), the Association of

Ref. AU 009/2017 - Translation - 15 May 2017 To: Director and the President The Stock Exchange of Thailand Management Discussion and Analysis for the three-month period ended 31 March 2017 After You

25 July 2017 To: The President The Stock Exchange of Thailand Re: Q2-2017 operating results We, Delta Electronics (Thailand) Public Company Ltd, would like to notify the Company’s Q2- 2017 (Apr-Jun

Ref. AU 011/2017 - Translation - 11 August 2017 To: Director and the President The Stock Exchange of Thailand Management Discussion and Analysis for the six-month period ended 30 June 2017 After You

หนังสือแสดงการรับทราบความผิด 13 November 2017 Subject : Management Discussion and Analysis of Second quarter ended 30 September 2017 Attn. : Director and Manager The Stock Exchange of Thailand Encls

1 (Translation) MD. 083/2019 May 8, 2019 Re: Management Discussion and Analysis For the Operating Results ended March 31, 2019 To: President The Stock Exchange of Thailand Management Discussion and