A provision of impairment of trade receivables is established when there is objective evidence that the Company will not be able to collect all amounts due according to the original terms of the agreement. Significant financial difficulties of the debtor, probability that the debtor will enter bankruptcy or financial reorganization, and default or delinquency in payments are considered indicators of objective evidence that the trade receivables are impaired. For significant individual amounts, assessment is made on individual basis, Amounts which are not individually significant, but are overdue, are assessed collectively and a provision is recognized considering the length of time considering past recovery rates.