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Cash and cash equivalents (Tables) | 12 Months Ended
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Dec. 31, 2021
Cash and Cash Equivalents [Abstract] |
Schedule of cash and cash equivalents |
| As of December 31,
| 2020 |  | 2021
Cash and other bank balances | $ | 680,440 |  |  | $ | 899,458 |
Total | $ | 680,440 |  |  | $ | 899,458 |

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- Definition Tabular disclosure of the components of cash and cash equivalents. + References No definition available. + Details
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