Million Baht 2020 2019 Sales 1,756.01 1,684.73 Cost of Sales 1,475.46 1,586.07 Gross Margin 280.55 98.66 Gain (loss) on exchange rates (23.34) 21.83 Other Incomes 27.64 4.97 Total Revenues 1,783.65 1,711.52

Million Baht 2020 2019 Sales 1,879.42 1,748.29 Cost of Sales 1,570.97 1,636.11 Gross Margin 308.45 112.18 Gain (loss) on exchange rates 101.34 38.44 Other Incomes 10.12 33.76 Total Revenues 1,990.88

core service revenue and effective cost control 2Q23 provided an EBITDA of Bt23,317mn, improved 4.3% YoY and 3.0% QoQ from core services revenue improvement combined with cost optimization especially in

100.00% 73.48 100.00% (1.75) (2.37%) Expenses Cost of sales 6.10 8.51% 6.96 9.47% (0.86) (12.31%) Cost of service and rental 14.48 20.18% 13.55 18.44% 0.93 6.87% Selling and service expenses 0.42 0.58

revenue from main business 3,797 3,971 (174) -4.4 Interest income from the MRT Purple Line Project 80 99 (19) -19.2 Other income 12 55 (43) -78.2 Total revenues 3,889 4,125 (236) -5.7 Cost of service 2,495

) -34.6 Cost of service 2,591 2,393 198 8.3 Selling and administrative expenses 303 276 27 9.8 Finance cost 328 312 16 5.1 Interest expense from the MRT Purple Line Project 94 108 (14) -13.0 Total expenses

of the Company’s cost reduction measures. Net Profit and Net Profit Margin • The Company reported net profit in Q1/2021 of THB 12 million, decreased by THB 1 million or 8% from Q1/2020 corresponding to

principle from the adoption can be summarized as follows:  Guidance on the classification and measurement of financial instruments at either fair value or amortized cost based on determination the type of

%) Total Revenues 1,030.23 100.00% 374.20 100.00% 656.03 175.32% 1,041.61 100.00% (11.38) (1.09%) Cost of Goods Sold (948.15) (92.03%) (407.91) (109.23%) 540.24 132.44% (994.77) (95.95%) (46.62) (4.69%) NRV

729.9% Cost of sales and services (819.3) (796.3) (822.9) 3.3% 0.4% (2,506.5) (2,407.9) (3.9%) Cost of construction under a concession arrangement (21.2) (398.1) (215.0) (46.0%) 914.2% (89.7) (744.4