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Inventories
6 Months Ended
Jun. 30, 2011
Inventories  
Inventories
5.
Inventories

Inventories consisted of the following items as of June 30, 2011, and December 31, 2010:

   
June 30,
  
December 31,
 
   
2011
  
2010
 
Raw materials
 $133,290  $61,332 
Work in process
  189,398   42,241 
Finished goods
  239,229   7,981 
Total
 $561,917  $111,554