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Prepayments and Other Current Assets (Tables) | 9 Months Ended
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Sep. 30, 2020
Prepaid Expenses And Other Current Assets Disclosure [Abstract] |
Schedule of prepayments and other current assets |
|  | September 30, |  |  | December 31, |
|  | 2020 |  |  | 2019 |
Prepaid land lease |  | $ | 176,210 |  |  | $ | 301,023 |
Prepayment for purchase of materials |  |  | 2,615,556 |  |  |  | 5,394,297 |
Value-added tax recoverable |  |  | 5,619,369 |  |  |  | 5,666,975 |
Others |  |  | 1,519,127 |  |  |  | 250,946 |
|  | $ | 9,930,262 |  |  | $ | 11,613,241 |

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