Discussion & Analysis Q4/2021 Operating Highlights in Q4/2021 Q4/20 Q4/21 Change +/(-) 2020 2021 Change +/(-) (THB million) %YoY %YoY Operating Revenue 207 188 (9%) 768 620 (19%) Gross Profit 127 112 (12%) 468

Q1/2017 due to the declining in raw water sales volume) and Net profit attributable to Equity holders of the parent company was 302.67 million Baht, decreased by 61.26 million Baht or 16.83% compared

% ( Total consolidated sales and services income excluding construction revenue under concession agreement of 2,100.73 million Baht, decreased by 121.19 million Baht or 5.45%) and Net profit attributable to

Gross profit 94,309 91,490 83,320 10,989 13.2 Other income 2,454 2,858 1,453 1,001 68.9 Profit before expenses 96,763 94,348 84,773 11,990 14.1 Selling and distribution expenses 25,061 22,708 23,815 1,246

Baht or 5.72% compared to same period of 2017) due to the declining in raw water sales volume and net profit attributable to Equity holders of the parent company was 580.63 million Baht, decreased by

of income from investment in associate 0.42 0.25 0.17 68.0% Corporate Income tax expenses -14.11 -14.83 0.72 -4.9% Net profit for the period 56.90 59.32 -2.42 -4.1% Profit Sharing for non-controlling

decrease by 75.88 million Baht or 2.47% compared to same period of 2017) due to the declining in raw water sales volume and net profit attributable to Equity holders of the parent company was 881.03 million

147.9 -1% Cost of Sales and Services (29.3) (28.7) 2% (84.3) (73.7) 14% Gross Profit 28.1 25.6 10% 62.6 74.2 -16% EBITDA 35.6 22.4 59% 55.6 59.8 -7% EBIT 31.6 18.5 71% 43.8 49.1 -11% Net Profit 28.4 19.3

service 332,244 323,393 8,851 2.7 325,730 313,043 12,687 4.1 Gross profit 111,004 94,224 16,780 17.8 108,347 91,490 16,857 18.4 Other income 3,625 2,539 1,086 42.8 4,675 2,858 1,817 63.6 Profit before

goods sold and rendering services 1,627.68 1,668.38 40.70 2.50% Cost of rendering hotel services 116.48 105.66 -10.83 -9.29% Total cost 1,744.17 1,774.03 29.87 1.71% Gross profit 994.08 1,090.62 96.54