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Note 16 - Geographical Sales
3 Months Ended
Mar. 31, 2016
Segment Reporting [Abstract]  
Segment Reporting Disclosure [Text Block]
Note 16 - Geographical Sales

Geographical distribution of sales consisted of the following for the three months ended March 31, 2016 and 2015:

Geographical Areas
 
March 31,
2016
   
March 31,
2015
 
 
           
China*
 
$
4,615,080
   
$
3,766,315
 
North America
   
17,223,375
     
15,118,508
 
Asia**
   
452,780
     
668,210
 
Europe
   
3,898,885
     
2,421,143
 
Australia
   
774,155
     
26,758
 
Hong Kong
   
19,683
     
5,675
 
Other countries
   
100,129
     
25,869
 
 
 
$
27,084,087
   
$
22,032,478
 

*   excluding Hong Kong
** excluding China