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Bank Loans (Details Narrative) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Short-term bank loans | $ 6,584,664 | $ 6,082,574 |
Debt instrument maturity date description | Mature on various dates from January 2, 2020 to October 17, 2020. |  |
Weighted average interest rate, percentage | 6.56% | 6.43% | 6.38%
Interest expenses | $ 500,000 | $ 500,000 | $ 500,000
Minimum [Member] |  |  |
Borrowings, interest rate | 5.66% |  |
Maximum [Member] |  |  |
Borrowings, interest rate | 9.00% |  |

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