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Prepayments and other current assets (Tables) | 6 Months Ended
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Jun. 30, 2021
Prepaid Expenses And Other Current Assets Disclosure [Abstract] |
Schedule of prepayments and other current assets |
|  | June 30, |  |  | December 31, |
|  | 2021 |  |  | 2020 |
Prepaid land lease |  | $ | 185,756 |  |  | $ | 183,912 |
Prepayment for purchase of materials |  |  | 8,838,734 |  |  |  | 10,945 |
Value-added tax recoverable |  |  | 5,935,486 |  |  |  | 5,864,989 |
Others |  |  | 287,132 |  |  |  | 991,669 |
|  | $ | 15,247,108 |  |  | $ | 7,051,515 |

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- Definition Tabular disclosure of the carrying amounts of other current assets. + References No definition available. + Details
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