Acc. 006/2019 November 11, 2019 To: The President The Stock Exchange of Thailand Subject: Management discussion and analysis (MD&A) for Quarter 3/2019 Dear Sir, S. Khonkaen Foods Public Company

2019 To : The President The Stock Exchange of Thailand Bangkok Chain Hospital Public Company Limited (the “Company”) would like to report the operating results of the Company and its subsidiaries

Analysis for the year 2019 (Ending December 31, 2019) (Revise Template) To Director and Manager of the Stock Exchange of Thailand Ubis (Asia) Public Company Limited (“the Company”) would like to clarify on

Stock Exchange of Thailand With reference to Kang Yong Electric Public Company Limited’s submission of financial statements for quarter 1/2020 (April 2020 – June 2020) duly reviewed by a certified public

Acc. 005/2020 August 10, 2020 To: The President The Stock Exchange of Thailand Subject: Management discussion and analysis (MD&A) for Quarter 2/2020 Dear Sir, S. Khonkaen Foods Public Company Limited

26 October 2020 To: The President The Stock Exchange of Thailand Re: Q3-2020 Operating Results We, Delta Electronics (Thailand) Public Company Limited (the “Company”) would like to notify the

27 April 2021 To: The President The Stock Exchange of Thailand Re: Q1-2021 Operating Results We, Delta Electronics (Thailand) Public Company Limited (the “Company”) would like to notify the Company’s

Attention: President The Stock Exchange of Thailand CH. Karnchang Public Company Limited (“the Company”) and its subsidiaries would like to clarify the consolidated operating result and financial position for

27 April 2020 To: The President The Stock Exchange of Thailand Re: Q1-2020 Operating Results We, Delta Electronics (Thailand) Public Company Limited (the “Company”) would like to notify the Company’s

results for the nine-month period of 2019, change of rate more than 20 percent Dear Director and Manager The Stock Exchange of Thailand According to the resolution of the Board of Directors of DOD Biotech