Key Financial Ratios Notes: (1) Inventory turnover ratio = cost of sales divided by net inventory (average) (2) Gross Profit Margin = gross profit divided by sales revenues (3) Net profit margin ratio = net profit divided by sales revenues (4) Interest - bearing debt to EBITDA ratio = interest-bearing debt (average) divided by earnings before interest, taxes, depreciation and amortization (EBITDA) (5) Net Interest-bearing debt to EBITDA ratio = net interest-bearing debt - cash (average) divided by earnings before interest, taxes, depreciation and amortization (EBITDA) 2023 2022 2021 Liquidity Ratio Current Ratio (times) 1.05 1.14 1.41 Quick Ratio (times) 0.37 0.29 0.53 Cash Flow Current Ratio (times) 0.31 (0.07) 0.25 Account Receivable Turnover Ratio (times) 20.78 22.48 21.74 Collection Period (days) 18 16 17 Inventory Turnover Ratio (times) (1) 8.79 8.61 8.34 Inventory Period (days) 42 42 44 Accounts Payable Turnover Ratio (times) 9.18 9.97 8.70 Payment Period (days) 40 37 42 Cash Cycle (days) 20 21 19 Profitability Ratio Gross Profit Margin (2) 1.11% 3.05% 10.24% Net Profit Margin (3) (0.92%) (1.34%) 5.69% Return on Equity (3.76%) (5.23%) 17.79% Efficiency Ratio Return on Asset (1.50%) (2.25%) 7.97% Total Asset Turnover Ratio (times) 1.64 1.68 1.41 Financial Policy Ratio Debt to Equity Ratio (times) 1.53 1.49 1.17 Interest-bearing Debt to EBITDA Ratio (times)(4) 12.44 16.71 2.29 Net Interest-bearing Debt to EBITDA Ratio (times)(5) 11.62 14.89 1.92 Interest-bearing Debt to Equity Ratio (times) 0.94 0.90 0.70 Net Interest-bearing Debt to Equity Ratio (times) 0.86 0.86 0.57 Interest Coverage Ratio (times) 2.78 2.13 15.52 Dividend Payout Ratio n.a. n.a. 31% Book Value per Share (baht/share) 3.73 3.90 4.29 Financial Highlights 56-1 ONE REPORT 2023 169
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