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Accounts receivable, net (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Accounts Receivable [Abstract] |  |
Accounts receivable from third party customers | $ 3,549,190 | $ 439,893
Less: Allowance for credit losses | (410,587) | (18,834)
Accounts receivable, net | 3,138,603 | 421,059
Change in Allowance for Credit Loss [Roll Forward] |  |
Balance at beginning of year | (18,834) | (17,045)
Assumed at business combination | (405,253) | 0
Additions during the year | (13,375) | (200)
Utilized provisions during the year | 8,201 | 0
Exchange differences | 18,674 | (1,589)
Balance at end of year | $ (410,587) | $ (18,834)

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