4Q17 Cash 11,226 4.1% 10,650 3.7% Interest-bearing debt to equity (times) 2.3 2.5 2.2 ST investment 2,963 1.1% 2,643 0.9% Net debt to equity (times) 2.0 2.3 1.9 Trade receivable 11,377 4.1% 14,179 5.0

Cycle (Days) 43 48 Total Debt to Equity Ratio (Times) 0.51 0.51 Interest Coverage Ratio (Times) 72.99 73.26 Debt Service Coverage Ratio (Times) 56.23 6.55 (3) Asset Management Capability (3.1) Debtor

(Times) 9.77 8.44 Average Collection Period (Days) 37 43 Inventory Turnover Period (Days) 19 19 Average Payable Period (Days) 16 18 Cash Cycle (Days) 40 44 Total Debt to Equity Ratio (Times) 0.47 0.51

50 Total Debt to Equity Ratio (Times) 0.51 0.71 Interest Coverage Ratio (Times) 73.26 43.82 Debt Service Coverage Ratio (Times) 6.55 2.59 (3) Asset Management Capability (3.1) Debtor Quality, Accounts

Equity Ratio (Times) 0.38 0.51 Interest Coverage Ratio (Times) 141.76 72.99 Debt Service Coverage Ratio (Times) 85.39 56.23 (3) Asset Management Capability (3.1) Debtor Quality, Accounts Receivable Aging

(Days) 36 48 Total Debt to Equity Ratio (Times) 0.43 0.51 Interest Coverage Ratio (Times) 153.16 73.26 Debt Service Coverage Ratio (Times) 10.69 6.55 - 6 - (3) Asset Management Capability (3.1) Debtor

Average Payable Period (Days) 22 17 Cash Cycle (Days) 38 48 Total Debt to Equity Ratio (Times) 0.49 0.51 Interest Coverage Ratio (Times) 114.45 73.26 Debt Service Coverage Ratio (Times) 14.12 6.55 (3) Asset

Average Payable Period (Days) 17 17 Cash Cycle (Days) 45 48 Total Debt to Equity Ratio (Times) 0.54 0.51 Interest Coverage Ratio (Times) 85.99 73.26 Debt Service Coverage Ratio (Times) 21.20 6.55 (3) Asset

Collection Period (Days) 37 37 Inventory Turnover Period (Days) 21 19 Average Payable Period (Days) 19 16 Cash Cycle (Days) 39 40 Total Debt to Equity Ratio (Times) 0.43 0.47 Interest Coverage Ratio (Times

% due to higher interest-bearing debt of Bt108,500mn, compared to Bt98,100mn in Dec-16. Total equity decreased by 1.9% to Bt41,893mn from softer retained earnings. Excluding 900MHz and 1800MHz spectrum