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Geographical Sales
3 Months Ended
Mar. 31, 2020
Segment Reporting [Abstract]  
Segment Reporting Disclosure [Text Block]

Note 13 - Geographical Sales


Geographical distribution of sales from continuing operations consisted of the following for the three months ended March 31, 2020 and 2019:


   

March 31, 2020

   

March 31, 2019

 
                 

Geographical Areas

               

North America

  $ 2,184,856     $ 2,516,038  

China

    -       6,278,704  

Other countries

    18,364       -  
    $ 2,203,220     $ 8,794,742