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Concentrations and Credit Risk (Details 3) - USD ($) | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Accounts payable | $ 19,560,793 |  | $ 11,157,014
Supplier A [Member] |  |  |
Accounts payable | $ 9,272,478 | [1] |
Concentration risk, percentage of accounts payable | 47.40% |  |
Supplier C [Member] |  |  |
Accounts payable | $ 2,017,814 |  |
Concentration risk, percentage of accounts payable | 10.32% |  |
Supplier D [Member] |  |  |
Accounts payable |  |  | $ 1,126,482
Concentration risk, percentage of accounts payable |  |  | 10.10%
[1] | Comprised less than 10% of net purchase for the respective period.

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