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Inventories
6 Months Ended
Sep. 30, 2011
Inventories [Abstract] 
Inventories
NOTE 7. INVENTORIES
     Inventories consisted of the following:
 
Sept. 30
2011
March 31
2011
Raw materials $ 1,546,302    $ 2,083,730
Work in process 1,726,549 1,109,270
Finished goods 409,177   450,857  
3,682,028 3,643,857
Less inventory reserve   (300,000 ) (300,000 )
Total inventories $ 3,382,028   $ 3,343,857