% Administrative expenses 84.66 10.66% 111.24 11.87% -26.59 -23.90% Doubtful debts -62.94 -7.93% 394.21 42.08% -457.16 -115.97% Loss from impairment of property investment 5.69 0.72% - - 5.69 100.00% Total Expense
%) Administrative expenses (23.09 ) (22.26 ) (0.83) 3.73% (34.22%) (39.43%) Other Expenses Doubtful accounts (0.57 ) (0.66 ) 0.09 (13.64%) (0.84%) (1.17%) Finance costs (13.07 ) (17.95 ) (4.88 ) 27.19% (19.37
%) Administrative expenses (23.09 ) (22.26 ) 0.83 (3.73%) (34.22%) (39.43%) Other Expenses Doubtful accounts (0.57 ) (0.66 ) 0.09 13.64% (0.84%) (1.17%) Finance costs (13.07 ) (17.95 ) (4.88 ) 27.19% (19.37%) (31.79
(13.55 ) (15.40 ) (1.85 ) 12.01% (11.15%) (14.01%) Administrative expenses (46.28 ) (45.78 ) 0.50 (1.09%) (38.08%) (41.66%) Other Expenses 0.00% 0.00% Doubtful accounts (0.86 ) (1.25 ) 0.39 31.20% (0.71
(11.60 ) (6.03 ) 5.57 (92.39%) (25.52%) (8.94%) Administrative expenses (24.94 ) (23.09 ) 1.85 (7.99%) (54.85%) (34.22%) Other expenses Doubtful accounts 0.86 (0.57 ) 1.43 (250.53%) 1.89% (0.84%) Finance
% -6.09 -10.57% Administrative expenses 111.24 11.87% 112.11 20.86% -0.87 -0.78% Doubtful debts 394.21 42.08% - - - 394.21 100.00% Loss from impairment of property investment - - - - - - Total Expense
shown below: (Unit : Million Baht) 2017 2016 Change Revenue 837 849 -1.4% Gross profit margin 293 342 -14.3% Selling Expenses 80 96 -16.7% Doubtful debts from the voiding of contract 320 - 100.0% Finance