As part of the Company’s credit risk management, the Company assesses the impairment for its customers based on different group of customers which share common risk characteristics that are representative of the customers’ abilities to pay all amounts due in accordance with the contractual terms.

Loss allowance for trade receivables has been measured at an amount equal to the lifetime ECL. The ECL on trade receivables are estimated using a provision matrix by reference to past default experience of the debtor and an analysis of the debtor’s current financial position, adjusted for factors that are specific to the debtors, and where relevant general economic conditions of the industry in which the debtors operate.

As the Company’s historical credit loss experience does not show significantly different loss patterns for different customer segments, the provision for loss allowance based on past due status is not further distinguished between the Company’s different customer base.

There has been no change in the estimation techniques or significant assumptions made during the current reporting period. A trade receivable is written off when there is information indicating that the debtor is in severe financial difficulty and there is no realistic prospect of recovery.

Information of financial risks of the trade and other receivables were disclosed in Note 29 to the financial statements.