Oster’s (2019) testing for coefficient stability. Our results survive all the robustness checks and thus appear to be strongly robust. Therefore, our results likely reflect a causal effect, rather than a

1,335.88 Operating expenses (1,103.19) (1,396.22) Corporate income tax – income (expenses) (3.47) 13.07 Operating loss (9.12) (47.27) Reversal allowance for bad debt and doubtful account 3.38 4.22 Impairment

3.86 Bad debt and doubtful accounts(reversal) 5.74 5.96 5.74 5.96 Loss from impairment on investment 1.14 1.14 47.76 47.76 Loss on sale of investment in a joint venture 0.29 0.29 45.74 45.74 Other

4.02 31.14 4.02 Bad debt and doubtful accounts(reversal) 5.66 5.96 5.66 5.96 Loss from impairment on investment 0.84 0.84 47.76 47.76 Loss from disposal of investment in a joint venture proportion 0.29

expenses. 8. Reversion (loss) from allowance for doubtful accounts was Baht 5.03 million decreasing from Baht 78.04 million equivalent to 93..95% because the Company received the payment of debt from Khum

loss was Baht 2,378.35 million, increased by 112%. Excluding, the reversal of impairment loss of assets and the allowance for doubtful accounts of Baht 1,184.53 million, the group incurred a net loss of

subsidiaries by having the main substance is as follows. * * * the Company and its subsidiaries recorded account receivable from the voiding of contract with allowance for doubtful debts in the amount of 320 MB

its subsidiaries had the operating loss of 598 million Baht. This amount, included by - the FX loss of 318 million Baht; - an allowance for doubtful debts of the subsidiaries of 76 million Baht (60

and increase the efficiency of the company and its subsidiaries. In 2020, the impact of TFRS 9 Financial Instruments about Reversal(Doubtful Accounts) is recognized for credit loss amounting to Baht

period of last year amount of 37.30 million Baht or decreased 37.30%. In 2019 the Company has the doubtful debt 22.90 million Baht, decreased from the same period of last year amount of 276.22 million Baht