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Income Taxes (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Dec. 22, 2017
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2017
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2016
Income Taxes (Textual)                  
Statutory tax rate   25.00% 25.00%   25.00% 25.00%      
Effective income tax rate   15.20% 125.10%   20.00% 21.50%      
Income tax, statute of limitations period         5 years        
Income tax expense   $ 80,670 $ (549,022)   $ (567,125) $ (1,087,991)      
Federal taxation cash provided             $ 6,528    
Description of carry forwards expire         During the period of 2030 through 2035.        
China [Member]                  
Income Taxes (Textual)                  
Statutory tax rate         25.00%        
Net operating losses               $ 6,710,939
Percentage of valuation allowance                 100.00%
United States [Member]                  
Income Taxes (Textual)                  
Statutory tax rate         34.00%        
State tax rates         0.00%        
Income tax expense       $ 80,000          
Additional income tax expense       $ 80,000          
Maximum [Member]                  
Income Taxes (Textual)                  
Effective income tax rate 35.00%                
Minimum [Member]                  
Income Taxes (Textual)                  
Effective income tax rate 21.00%