–2021 Balance by Quarter Change Q3-21 Q2-21 Q3-20 Q3-21 VS Q2-21 Q3-21 VS Q3-20 (Million Baht: MB) (MB) % (MB) % Total revenue 1,509.1 2,081.2 2,241.1 (572.1) (27.5) (732.0) (32.7) Total operating

audit firm; (2) Not required if another auditor affiliated with the same audit firm has submitted an application and the document to the SEC Office, provided that there is no material change to the

-2023 Balance by Quarter Change Q3-23 Q2-23 Q3-22 Q3-23 VS Q2-23 Q3-23 VS Q3-22 (Million Baht: MB) (MB) % (MB) % Total revenue 1,704.9 1,703.0 1,886.5 1.9 0.1 (181.6) (9.6) Total operating expenses

income and cost of sales resultin g in the operating income until the gross profit being reported differently from the previous periods Operating Highlights in Q3/2019 Q3/18 Q2/192 Q3/19 Change +/(-) 9M/18

depreciation and amortization expenses Financial Performance Project UpdatesExecutive Summary Change QoQ YoY +/(-) Operating revenue 5,553 5,366 5,459 2% (2%) 11,037 10,825 (2%) Gross profit 1,251 1,098 1,256 14

million and the backlog of Baht 641.34 million. For this captioned quarter, there were 3 awarded service projects with their contract value of Baht 15.12 million of which some works were partly implemented

until the gross profit being reported differently from the previous periods Operating Highlights in Q4/2019 & 2019 Q4/18 Q3/19 Q4/19 Change +/(-) 2018 2019 Change+/(-) (Unit: Million Baht) QoQ YoY

million or 8.7%. Partly came from applying the Accounting Standard by shifting some of the expenses to costs of sale. - Financial costs increased by THB 7.34 million or 9.88% comparing to the same period of

under the intangible asset account included with land for construction) of which the construction has been partly executed and currently waiting for an additional approval of pipeline construction. 2

partly due to the fact that Jeeraporn, former assistant auditor, had disclosed the draft financial statements of the clients under responsibility of her audit group to her sister Jeeranan when she knew or