violation of Clauses 20(1) and 20(5) of the Notification of the Capital Market Supervisory Board No. TorLorThor. 3/2555 Re: Approval for Personnel of Business Operator to Perform Duty of Investment Analysis

ทดสอบกระดาษหัวจดหมาย IRC 5 -Translation- 13 May 2019 Subject: Notification of a Related-Party Transaction To: Managing Director of the Stock Exchange of Thailand Please be informed that the Board of

BOD Resolution 4_2018 EN_Connected Transactions_ITTC_v2 -Translation- 11 May 2018 Subject: Notification of a Related-Party Transaction To: President and Managing Director The Stock Exchange of

ทดสอบกระดาษหัวจดหมาย IRC 5 -Translation- 11 May 2020 Subject: Notification of a Related-Party Transaction To: Managing Director of the Stock Exchange of Thailand Please be informed that the Board of

. It was affected by the epidemic of COVID-19, together with government lockdown measures that began in the second half of March 2020 to allow for social pacing and slow down the spread of COVID-19 in

Thailand had to announce the closure of the country and take measures to lock down. In order to reduce the spread of the new corona virus (COVID- 19 ) has made the Thai economy as a whole, significantly

% -24.5% 2,120.4 1,782.4 -15.9% EBITDA 396.8 440.6 300.3 -24.3% -31.8% 753.7 740.8 -1.7% Net profit (loss) 158.0 118.2 14.5 -90.8% -87.7% 289.8 132.7 -54.2% Gross profit margin (%) 44.2% 45.9% 41.9% -2.3

is strictly for reference. PAGE 2 Notification of the Office of the Securities and Exchange Commission No. SorThor. 67/2558 Re: Official Holidays of Securities Companies and Derivatives Business

is strictly for reference. Notification of the Office of the Securities and Exchange Commission No. SorThor. 67/2558 Re: Official Holidays of Securities Companies and Derivatives Business Operators B.E

Commission Notification of the Securities and Exchange Commission No. SorThor. 26/2550 Re: Securities Companies and Derivatives Business Operators’ Holidays for B.E. 2551 (2008) _____________ By virtue of