2016/17 (Restated) 1Q 2017/18 Liquidity Ratios 1Q 2016/17 (Restated) 1Q 2017/18 Gross profit 1 (%) 59.1% 58.2% Current ratio (times) 0.9 0.8 Operating EBITDA (%) 70.9% 41.4% Quick ratio6 (times) 0.8 0.7

EBITDA (%) 40.4% 45.4% Quick ratio (times) 0.8 0.7 Cash-to-net profit (%) 99.2% 96.4% Account receivable turnover (times) 4.9 4.3 Net profit (excl. NCI) (%) 23.9% 20.3% Average collection period (days

Gross profit 1 (%) 55.1% 58.2% Current ratio (times) 2.0 1.4 Operating EBITDA (%) 23.5% 37.3% Quick ratio6 (times) 2.0 1.4 Net profit (from operation) (%) 14.1% 24.3% Account receivable turnover (times

-Dec-17 Gross profit (%) 57.2% 60.6% Current ratio (times) 0.9 1.9 Operating EBITDA (%) 32.1% 38.0% Quick ratio (times) 0.8 1.8 Cash-to-net profit (%) 128.9% 100.9% Account receivable turnover (times

) Quick ratio (Time) 1.06 3.39 (2.33) Average collection period 85 80 (5) Days of inventory 206 217 (11) Profitability ratio Gross profit margin (%) 19.07% 26.34% (7.27%) Operating profit margin (%) 0.12

suppliers and contractors for the same. The ordering of the gear was under process with a lead time of 14 months offered from the supplier. However, with quick actioning of the contingency plan by the

1.5 Operating EBITDA (%) 37.9% 16.6% Quick ratio6 (times) 1.5 1.5 Net profit (from operation) (%) 18.5% 5.5% Account receivable turnover (times) 2.6 4.2 Net profit (after MI) 2 (%) 23.7% 5.7% Average

(Restated) 31-Mar-18 Gross profit (%) 58.4% 61.0% Current ratio (times) 0.9 1.8 Operating EBITDA (%) 44.5% 43.0% Quick ratio (times) 0.8 1.2 Cash-to-net profit (%) 94.8% 101.1% Account receivable turnover

, quick response, and strong public health system. Recently, the Global COVID-19 index (GCI) ranks Thailand as the second highest recovery rate of COVID-19 pandemic, and praised by WHO and international

convertible debenture. Liquidity and capital adequacy As at 31 March 2020 and 31 December 2019, the current ratio of the Company and its subsidiaries are 2.28 times and 1.47 times, respectively, and the quick