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Note 4 - Inventory (Tables)
6 Months Ended
Jun. 30, 2020
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

As of

 
  

June 30, 2020

  

December 31, 2019

 
Raw materials $2,602,672  $- 

Work in-process

  11,315,916   8,693,457 

Finished goods

  88,398   959,398 

Inventory

 $14,006,986  $9,652,855