of days of inventory 36 32 Collection period (days) 49 43 Accounts payable (days) 50 43 Profitability Ratios Gross profit margin (%) 35.4 34.8 EBITDA margin (%) 20.8 21.0 Net profit margin for the

22.2%. The decrease was due to income tax paid of 18.5 million Baht and repayment some trade accounts payable. (2.2) Non-current liabilities as of December 31, 2019 amounted 105.7 million Baht compared

% 0.00 0.03% Current portion of lease liabilities               60.80 2.38%           69.56 2.69% 8.76 14.42% Income tax payable              78.14 3.06%           12.29 0.48% (65.85) (84.27%) Short-term

837.3 (123.8) (14.8) Current portion of liabilities under financial arrangement agreements 54.4 93.8 (39.4) (42.0) Income tax payable 27.0 53.3 (26.3) (49.3) Contract liabilities 325.5 272.9 52.6 19.3

494 million.  Trade Accounts Payable decreased by THB 454 million, mainly from the decrease of the Company’s Trade Account Payable of THB 427 million, although purchase volume in September 2017

and its subsidiaries has Total Liabilities in the amount of THB 57,658 million, decreased by THB 4,321 million, changes in liabilities were as follow:  Trade Accounts Payable decreased by THB 3,467

7,849.9 million baht, decreased from 31 December 2018 by 490.3 million baht, mainly due to: Trade and other payables lower by 366.1 million baht, a decreasing amount mainly from trade account payable which

lease of aircrafts and Finance lease liabilities 691.3 539.5 151.8 Income tax payable 13.1 213.9 (200.8) Unearned revenue 2,531.0 2,625.7 (94.7) Other current liabilities 2,152.1 2,077.0 75.1 Total

, Liabilities arising from financial lease of aircrafts and Finance lease liabilities 580.3 539.5 40.8 Income tax payable 10.1 213.9 (193.8) Unearned income 2,195.0 2,625.7 (430.7) Other current liabilities

financial lease of aircrafts and Finance lease liabilities 994.6 691.3 303.3 Income tax payable 277.3 13.1 264.2 Unearned revenue 2,343.7 2,531.0 (187.3) Other current liabilities 2,457.7 2,221.5 236.2 Total