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million baht 1,247 1,247 1,247 Key financial ratios Liquidity ratios Current ratio times 3.07 3.11 3.14 Quick ratio times 2.22 2.38 2.43 Cash ratio times 0.36 0.38 0.45 Receivable turnover times 4.82 4.70

capital-Paid million baht 1,247 1,247 1,247 Key financial ratios Liquidity ratios Current ratio times 2.99 3.07 3.09 Quick ratio times 2.04 2.22 2.35 Cash ratio times 0.45 0.37 0.38 Receivable turnover

% 56.1% 56.1% Current ratio (times) 5.5 0.9 0.8 Operating EBITDA (%) 31.7% 33.2% 33.2% Quick ratio6 (times) 5.5 0.9 0.8 Net profit (from operation) (%) 22.4% 25.6% 25.6% Account receivable turnover (times

(times) 2.4 0.9 Operating EBITDA (%) 19.5% 40.5% Quick ratio6 (times) 2.4 0.9 Net profit (from operation) (%) 12.7% 24.9% Account receivable turnover (times) 2.3 3.0 Net profit (after MI) 2 (%) 12.3% 22.9

% Quick ratio6 (times) 1.5 1.5 Net profit (from operation) (%) 18.4% 6.4% Account receivable turnover (times) 2.6 3.8 Net profit (after MI) 2 (%) 19.1% 5.4% Average collection period7 (days) 139 95 Return

December 2018, the current ratio of the Company and its subsidiaries are 4.28 times and 4.58 times, respectively, and the quick ratio are 4.05 times and 4.30 times, respectively. The main reason of the

profit 1 (%) 53.2% 62.4% Current ratio (times) 1.8 1.5 EBITDA (%) 31.3% 31.1% Quick ratio6 (times) 1.8 1.5 Net profit (from FS) (%) 19.4% 18.7% Account receivable turnover (times) 4.0 4.5 Net profit (after

(times) 0.9 2.3 EBITDA (%) 41.3% 26.9% Quick ratio6 (times) 0.9 1.0 Net profit (from FS) (%) 24.9% 22.0% Account receivable turnover (times) 3.0 1.9 Net profit (after MI) 2 (%) 22.9% 14.4% Average