Transaction (Revised) 11/01/2021 07:41 Entering into a Related Transaction 11/01/2021 07:41 Entering into a Related Transaction Remark:   Data will be displayed within 3 years. Last updated on 31 March 2022

of the parent 114.60 130.21 (15.61) (11.99) Gross Profit Margin (%) 26.58 27.86 Net Profit Margin (%) 11.04 12.65 Remark: 1) Net profit margin is calculated from the net profit attributable to equity

% 17.5 2.7% 24.0% Revenue from Sales and Service 724.1 99.1% 633.6 98.4% -12.5% Other Income 6.3 0.9% 10.1 1.6% 59.8% Total Revenue 730.5 100.0% 643.7 100.0% -11.9% Remark: (1) Percentage of Total Revenue

11.93 29.77 (17.84) (59.93) Gross Profit Margin (%) 25.43 26.46 Net Profit Margin (%) 5.27 11.72 Remark: 1) Net profit margin is calculated from the net profit attributable to equity holders of the parent

medium size transaction, the board of directors must be approved. And disclose the information to the Stock Exchange of Thailand. The company has no connected transactions during the past 6 months. Remark

% 961.2 97.9% -35.1% Other Income 14.8 1.0% 21.0 2.1% 42.0% Total Revenue 1,495.7 100.0% 982.2 100.0% -34.3% Remark: (1) Percentage of Total Revenue In the 2nd quarter of 2019 and 2020, the Group’s total

Template) 28/02/2020 20:00 Dividend payment, Changing of Director, 2020 AGM date, and Conneted Transations (Add Template) Remark:   Data will be displayed within 3 years. Last updated on 19 January 2023

subsidiary Remark:   Data will be displayed within 3 years. Last updated on 19 January 2023

facilities for Tsuruha (Thailand) Co., Ltd. with regard to credit limit with Sumitomo Mitsui Banking Corp., Bangkok Branch. Remark:   Data will be displayed within 3 years. Last updated on 19 January 2023

- (Thirachai Phuvanatnaranubala) Secretary-General Office of the Securities and Exchange Commission Remark: The rationale for issuing this Notification is to determine the application form for offer for sale of