-bearing Debt-to-Equity ratio was 0.57x at the end of 1Q2018, improved from 0.58x at the end of 2017. 3. KEY FINANCIAL RATIOS 31 December 2017 31 March 2018 Gross Profit Margin 33.1% 35.3% Net Profit Margin1

%) 186 86 (54%) Net Profit for the Company 63 (3) (105%) 123 10 (92%) Gross profit margin (%) 64.4% 54.9% (9.5%) 64.9% 59.5% (5.4%) EBITDA margin1 (%) 30.4% 18.6% (11.8%) 30.9% 23.6% (7.3%) Net profit

127 (30%) 773 468 (39%) EBITDA 75 60 (20%) 359 210 (42%) Net Profit for the Company 50 17 (66%) 237 55 (77%) Gross profit margin (%) 64.0% 61.3% (2.7%) 64.7% 60.9% (3.8%) EBITDA margin1 (%) 26.5% 28.7

RATIOS For the Three Months ended on 30 June 2016 30 June 2017 Gross Profit Margin 40.3% 32.9% Net Profit Margin1 42.2% 62.6% Return on Equity 7.04% 12.11% Debt/Equity Ratio 1.50x 0.76x Net Interest

Gross Profit Margin 29.4% 32.0% Net Profit Margin1 30.3% 58.0% Return on Equity 3.26% 6.26% Debt/Equity Ratio 1.46x 0.72x Net Interest-bearing Debt/Equity Ratio 1.36x 0.62x 1 Net profit margin is

31 December 2016 31 December 2017 Gross Profit Margin 35.3% 33.1% Net Profit Margin1 14.7% 53.5% Return on Equity 2.94% 15.75% Debt/Equity Ratio 1.51x 0.70x Net Interest-bearing Debt/Equity Ratio 1.38x

-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