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Note 8 - Inventories (Tables)
6 Months Ended
Jun. 30, 2022
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

June 30,

  

December 31,

 
  

2022

  

2021

 
  

(unaudited)

  

(audited)

 

Inventories consist of the following:

        

Raw materials

 $582,458  $494,348 

Work in process

  165,263   119,069 

Finished products

  980,483   797,372 

Total inventories

 $1,728,204  $1,410,789