25 April 2019 To: The President The Stock Exchange of Thailand Re: Q1-2019 operating results We, Delta Electronics (Thailand) Public Company Ltd, would like to notify the Company’s Q1-2019 (Jan-Mar

- Translation - MPIC 011/2018 August 8, 2018 Subject: Submit the Financial Statement for the quarter ended June 30, 2018 and clarification for the change of operating result more than 20% Attention

- Translation - MPIC 019/2018 November 7, 2018 Subject: Submit the Financial Statement for the quarter ended September 30, 2018 and clarification for the change of operating result more than 20

- Translation - MPIC 022/2019 November 6, 2019 Subject: Submit the Financial Statement for the quarter ended September 30, 2019 and clarification for the change of operating result more than 20

School Name: สารสาสน์วิเทศศึกษา (Translation) Re: BOD.SET 005/2018 February 23, 2018 Subject: Clarification on the Change in operating results for the year ended December 31, 2017 over 20% compared

Dental Public Company Limited (LDC) would like to clarify the performance of the Company for the 3 months period ended March 31, 2018 which the details are as followed: Summary of the Company’s Performance

1 Translation CEN 012-2020 May 15, 2020 Subject : Management discussion and analysis for business operation Quarter 1-2020 To : The Manager and President The Stock Exchange of Thailand Summarization

Baht 24.46 million, a decrease of 62.93% compared to 2017. Final earnings per share resulted at Baht 1.15. Total Revenues 2018 2017 Change (Million Baht) (Million Baht) (%) Sales 2,020.63 2,147.64 (5.91

, decreased 91.6 million baht or 30.7 percent compared to current liabilities as of December 31, 2016. The major change was payment of short-term loans to financial institutions amounted 114.4 million baht

profit in Q3/2020 and 9M/2020 were THB 124 million and THB 340 million, respectively, which decreased by 39% from Q3/2019 and 43% from 9M/2019, corresponding to the decrease in sales. • Gross profit margin