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Note 3 - Inventories
6 Months Ended
Jun. 30, 2014
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]

3. Inventories


Inventories are valued at the lower of cost or market value. Cost is determined using the first-in first-out method (FIFO).


Inventories consist of the following:


   

June 30, 2014

   

December 31, 2013

 

Finished products

  $ 428,066     $ 373,281  

Work-in-process

    859,839       817,456  

Raw materials

    2,065,125       1,548,076  

Net Inventories

  $ 3,353,030     $ 2,738,813