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

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

ต้นทุนค่าเสื่อมราคาและค่าตัดจ าหน่าย Operating highlight in Q2/2018 Q2/17 Q1/18 Q2/18 Change +/(-) 1H/17 1H/18 Change +/(-) (THB million) QoQ YoY YoY Operating revenue 5,459 5,716 6,563 15% 20% 10,825

increase in Ft rate. Q3/2018 Financial and Operating Highlights * ไม่รวมต้นทุนค่าเสื่อมราคาและค่าตัดจ าหน่าย Operating highlight in Q3/2018 Q3/17 Q2/18 Q3/18 Change +/(-) 9M/17 9M/18 Change +/(-) (THB

Nation U Co., Ltd., the subsidiary of the Company, and change in the accounting policy regarding the record of the land valuation To: Director and Manager The Stock Exchange of Thailand (SET) Attachment

million or 16.5 percent from Baht 975.56 million in the 3 rd quarter of 2017. The change was due to the decreased lease receivable, calculated according to the Effective Interest Method. =., Other income

Consolidated Separate Amount Change Amount Change Q1.2020 Q1.2019 Amount % Q1.2020 Q1.2019 Amount % Revenue from sale – net 289.72 352.86 -63.14 -17.89% 287.55 352.69 -65.14 -18.47% Profit from the exchange rate