to be recognized in 2018. (Unit : Million Baht) 2018 2017 Change % Change Operating revenue 406.54 351.36 55.18 15.70% Operating cost 337.23 293.88 Gross profit 69.31 57.49 11.83 20.58% Gross profit

(Translation) Re: BOD.SET 003/2020 February 25, 2020 Subject: Clarification on the Change in operating results for the twelve month ended 31 December 2019 over 20% compared with the same period of

(Translation) Re: BOD.SET 013/2019 November 12, 2019 Subject: Clarification on the Change in operating results for the nine month ended September 30, 2019 over 20% compared with the same period of

Governance Project" of the Securities and Exchange Commission (SEC). An English version of the MD&A has been prepared from the Thai version. In the event of a conflict or a difference in interpretation between

Q2 2023 increased at a similar rate to the change in revenue compared to Q2-2022. The increase rate in cost of equipment for lease and revenue was different. This is because the new project of

Summary of operations and the factors that make a significant change Summary of Operations for the Year 2019 Topic Annual Balance Change 2019 2018 2019 VS 2018 (MB) (MB) % Total Revenue 7,076.7 4,237.6

- 2019 Balance by Quarter Change Q1–19 Q4–18 Q1–18 Q1–19 VS Q4–18 Q1–19 VS Q1–18 (Million Baht: MB) (MB) % (MB) % Total Revenue 1,266.5 1,109.5 1,044.9 157.0 14.2 221.6 21.2 Total Operating Expenses

-month period ended 30 June Change % Change 2 / 5 Operating results by business for the three-month period ended 30 June 2019 • Decrease in gross profit was mainly derived from the following reasons: 1

–2021 Balance by Quarter Change Q2–21 Q1–21 Q2–20 Q2–21 VS Q1–21 Q2–21 VS Q2–20 (Million Baht: MB) (MB) % (MB) % Total revenue 2,081.2 1,824.2 1,187.6 257.0 14.1 893.6 75.2 Total operating expenses

were the increasing rate of change in the same direction and the similar rate. This is because the overall gross profit margin of the project which delivered in each quarter was not significantly