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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%