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Note 2 - Inventories (Tables)
6 Months Ended
Jun. 30, 2022
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

As of
June 30,

2022

  

As of
December 31,

2021

 
         

Finished goods

 $282,268  $193,287 

Raw materials

  186,043   183,410 

Work-In-Process

  6,305   10,987 

Total

 $474,616  $387,684