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Note 13 - Subsequent Events (Details Textual) - USD ($)
Mar. 30, 2020
Jan. 01, 2020
Dec. 31, 2019
Dec. 31, 2018
Convertible Notes Payable, Total     $ 444,581 $ 513,356
Subsequent Event [Member]        
Convertible Notes Payable, Total $ 470,631      
Convertible Note Payable Number 8.20 [Member] | Subsequent Event [Member] | i2China Mgt LLC [Member]        
Convertible Notes Payable, Total 8,000 $ 48,000    
Debt Instrument, Interest Rate, Stated Percentage [1]   1.85%    
Convertible Notes Payable, Monthly Advance Payment, Maximum   $ 4,000    
Debt Instrument, Convertible, Conversion Price   $ 0.25    
Stephen Chen [Member]        
Convertible Notes Payable, Total     $ 428,581 $ 513,356
Stephen Chen [Member] | Convertible Note Payable Number 6.20 [Member] | Subsequent Event [Member]        
Convertible Notes Payable, Total 18,050 $ 216,600    
Debt Instrument, Interest Rate, Stated Percentage [1]   1.85%    
Convertible Notes Payable, Monthly Advance Payment, Maximum   $ 9,025    
Debt Instrument, Convertible, Conversion Price   $ 0.25    
Stephen Chen [Member] | Convertible Note Payable Number 7.20 [Member] | Subsequent Event [Member]        
Convertible Notes Payable, Total $ 30,000    
Debt Instrument, Interest Rate, Stated Percentage   1.85%    
Debt Instrument, Convertible, Conversion Price   $ 0.25    
[1] The Short-Term Applicable Federal Rate