-18 Million Baht 6 3. KEY FINANCIAL RATIOS 31 December 2018 31 December 2017 Gross Profit Margin 34.4% 33.1% Net Profit Margin1 57.5% 53.5% Return on Equity 16.9% 19.8% Debt/Equity Ratio 0.69x 0.70x Net

March 2019 31 December 2018 Gross Profit Margin 39.9% 34.4% Net Profit Margin1 51.9% 57.5% Return on Equity 2 14.5% 16.9% Debt/Equity Ratio 0.75x 0.69x Net Interest-bearing Debt/Equity Ratio 0.64x 0.58x 1

investment and working capital. 3. KEY FINANCIAL RATIOS 3Q’18 YTD 2018 31 December 2017 Gross Profit Margin 37.1% 35.5% 33.1% Net Profit Margin1 60.1% 57.2% 53.5% Return on Equity2 19.4% 16.8% 19.8% Debt

426 76% EBITDA 24 81 238% 114 223 96% Net Profit (Loss) for the Company (13) 34 362% (9) 82 1,011% Gross Profit Margin (%) 52.2% 64.6% 12.5% 56.1% 63.2% 7.1% EBITDA Margin1 (%) 20.7% 32.8% 12.1% 26.2

67% EBITDA 58 83 43% 172 306 78% Net Profit (Loss) for the Company 13 36 177% 4 118 2,850% Gross Profit Margin (%) 59.6% 62.9% 3.3% 57.3% 63.1% 5.8% EBITDA Margin1 (%) 30.1% 30.9% 0.8% 27.4% 32.1% 4.7

46% EBITDA 33 83 152% 90 142 58% Net Profit (Loss) for the Company (7) 34 586% 4 49 1,125% Gross Profit Margin (%) 56.2% 63.9% 7.7% 57.7% 62.4% 4.7% EBITDA Margin1 (%) 23.9% 35.3% 11.4% 28.2% 32.6% 4.4

355 (24%) EBITDA 60 58 (3%) 210 172 (18%) Net Profit (Loss) for the Company 17 13 (24%) 55 4 (93%) Gross Profit Margin (%) 61.4% 59.6% (1.8%) 60.9% 57.3% (3.6%) EBITDA Margin1 (%) 28.6% 30.4% 1.8% 27.2

183 (15%) EBITDA 27 33 22% 86 90 5% Net Profit(Loss) for the Company (3) (7) (133%) 10 4 (60%) Gross Profit Margin (%) 54.9% 56.2% 1.3% 59.5% 57.7% (1.8%) EBITDA Margin1 (%) 18.6% 23.9% 5.3% 23.6% 28.2

35% EBITDA 83 96 16% 142 177 25% Net Profit (Loss) for the Company 34 43 26% 49 77 57% Gross Profit Margin (%) 63.9% 64.2% 0.3% 62.4% 64.1% 1.7% EBITDA Margin1 (%) 35.5% 31.8% (3.7%) 32.6% 31.1% (1.5

Profit 223 280 26% 583 756 30% EBITDA 111 148 33% 288 396 38% Net Profit (Loss) for the Company 54 83 54% 131 210 60% Gross Profit Margin (%) 66.0% 65.4% (0.6%) 64.8% 66.1% 1.3% EBITDA Margin1 (%) 32.6