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Accounts receivable, net (Details) - USD ($) | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Accounts receivable, net. |  |  |
Trade accounts receivable | $ 38,446,554 | $ 27,163,719 |
Receivable from OC-BVI | 41,129 | 37,293 |
Other accounts receivable | 322,609 | 28,384 |
Accounts Receivable, Gross, Current | 38,810,292 | 27,229,396 |
Allowance for doubtful accounts | (583,401) | (183,214) | $ (183,020)
Accounts receivable, net | $ 38,226,891 | $ 27,046,182 |

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