26 February 2018 Subject: Management Discussion and Analysis for the Year Ended December 31, 2017 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology Public Company Limited

วันที่ 14 สิงหาคม 2550 DEMCO Public Company Limited No. Demco AC002/2018 February 28, 2018 Subject : The company’s operating result of the year 2017. To : The president, The Stock Exchange of

30 July 2019 To: The President The Stock Exchange of Thailand Re: Q2-2019 operating results We, Delta Electronics (Thailand) Public Company Ltd, would like to notify the Company’s Q2-2019 (Apr-Jun

Stock Exchange of Thailand Ekachai Medical Care Public Company Limited (the “Company”) would like to clarify on the operating results for the second quarter of 2019 at the end of 30th June 2019 as follows

14 August 2018 Subject: Management Discussion and Analysis for the Six-Month Period Ended June 30, 2018 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology Public Company

Justification_E_2-61 NO. AC. 003/2018 14 August 2018 Subject: Clarification of changes in operating performance of more than 20% To: The President of the Stock Exchange of Thailand M. K. Real Estate

26 October 2018 To: The President The Stock Exchange of Thailand Re: Q3-2018 operating results We, Delta Electronics (Thailand) Public Company Ltd, would like to notify the Company’s Q3-2018 (Jul-Sep

Stock Exchange of Thailand Ekachai Medical Care Public Company Limited (the “Company”) would like to clarify on the operating results for the three-month period at the end of 30th September 2018 as

14 November 2018 Subject: Management Discussion and Analysis for the Nine-Month Period Ended September 30, 2018 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology Public

October 28, 2019 To: The President The Stock Exchange of Thailand Re: Q3-2019 operating results We, Delta Electronics (Thailand) Public Company Ltd, would like to notify the Company’s Q3-2019 (Jul