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Note 3 - Inventories
9 Months Ended
Dec. 31, 2019
Notes to Financial Statements  
Inventory Disclosure [Text Block]
NOTE 
3
 - INVENTORIES
       
 
Inventories at
December 31, 2019
consisted of the following:
 
   
Current
   
Long Term
   
Total
 
Raw materials
  $
474,916
    $
84,721
    $
559,637
 
Finished goods
   
48,324
     
736
     
49,060
 
Totals
  $
523,240
    $
85,457
    $
608,697
 
 
Inventories at
March 31, 2019
consisted of the following:
 
   
Current
   
Long Term
   
Total
 
Raw materials
  $
273,039
    $
84,721
    $
357,760
 
Finished goods
   
53,269
     
736
     
54,005
 
Totals
  $
326,308
    $
85,457
    $
411,765
 
 
The Company values its inventories at the lower of cost and net realizable value using the 
first
 in, 
first
 out (“FIFO”) method.