9. | Accounts receivable, net |
| | | | | | | December 31, | | | 2023 | | 2024 | | | US$ | | US$ | | | | | | Accounts receivable, gross | | 150,793 | | 142,799 | Less: allowance for expected credit loss of receivables | | (20,093) | | (20,938) | | | | | | Accounts receivable, net | | 130,700 | | 121,861 |
The following table summarizes the details of the Group’s allowance for expected credit losses: | | | | | | | | | For the year ended December 31, | | | 2022 | | 2023 | | 2024 | | | US$ | | US$ | | US$ | | | | | | | | Balance at the beginning of the year | | (12,426) | | (20,670) | | (20,093) | Additions charged to general and administrative expenses, net | | (8,484) | | (82) | | (3,427) | Write-off during the year | | 240 | | 659 | | 2,582 | | | | | | | | Balance at the end of the year | | (20,670) | | (20,093) | | (20,938) |
|