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v3.21.1

Accounts Receivable, Net (Details) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Accounts Receivable, Net (Details) [Line Items] |  |  |
Bad debt expense | $ 26,688 |  |
Recovery bad debt | 27,993 |  |
Disposal bed expense |  | $ 10,148 | $ 5,826
Accounts Receivable [Member] |  |  |
Accounts Receivable, Net (Details) [Line Items] |  |  |
Bad debt expense | $ 30,572 |  |

X
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- Definition Disposal bed expense. + References No definition available. + Details
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- Details
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