months 13 35 Over 12 months 11 33 Total 509 661 Allowance for doubtful debt 6 9 LIABILITIES AND SHAREHOLDERS’ EQUITY LIABILITIES AND EQUITY BREAKDOWN 31 DECEMBER 2018 (Restated) 31 DECEMBER 2019 (THB mn

expenses 543 500 (9%) Bad and doubtful debts expense 0 10 (100%) Loss on confirmed purchase orders for undelivered raw material 0 41 100% Finance costs 348 475 27% Total expenses 14,621 31,016 53% Profit

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

costs 129 Doubtful debts expense from advance to suppliers 3 Gain from the Creditor waived the debt (624) Unrealised loss (gain) on foreign exchange (83) (Reversal of) loss on devaluation of inventories

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

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

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