liabilities Number of days of inventory = Average inventory / (Cost of sales of goods / Number of days in the period1) Collection period (days) = Average trade account receivables before allowance for doubtful

2019, the Company had the selling and administrative expenses of 2,333.5 million Baht, a decrease of 432.5 percent, mainly due to a decrease in allowance for doubtful accounts from creditors of

79.5 4.6 5.8 Cleaning service expenses 58.0 50.4 7.6 15.0 Bad and doubtful debts expenses 35.6 65.1 (29.5) (45.3) Security guard expense 31.4 29.7 1.7 5.7 Property tax 10.5 18.3 (7.8) (42.6) Others 666.7

loss (gain) from trading security (4) Reversal of bad and doubtful debts (137) Loss on devaluation of inventories (Reversal of) 123 Gain from debt restructuring (16) Gain from debt restructuring (765

More than 12 months 0.54 0.23 - - Total Trade Receivables 229.00 100.00 134.50 100.00 Deduct Allowance for doubtful debt - - Trade Receivables - Net 229.00 134.50 The table depicts trade receivables of

Allowance for doubtful debt - - Trade Receivables - Net 229.00 183.37 The table depicts trade receivables of the Company in the year 2016 with undue and overdue less or equal to 3 months is at 84.16% of Net

Depreciation and amortization 693 Work roll amortisation 76 Interest income (6) Finance costs 192 Doubtful debts expense from advance to suppliers 3 (Reversal of) loss on impairment expense of property, plant

0.11 0.05 23.95 7.78 More than 12 months 0.54 0.23 - - Total Trade Receivables 229.00 100.00 307.55 100.00 Deduct Allowance for doubtful debt - - Trade Receivables - Net 229.00 307.55 The table depicts

increased deferred income tax for allowance for doubtful accounts and the provision for penalty on projects delay, which those additional recorded during the year 2019. And the effect of adoption of the

days of inventory = Avg. inventory / (Cost of sales of goods / Number of days in the period1) Collection period (days) = Avg. trade account receivables before allowance for doubtful account / (Total