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Cost of Sales (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Composition of cost of sales by principal    
Purchases $ 802,028 $ 1,397,063
Ending inventory of trade goods (-) 0 (55,689)
Other Expenses 82,993 0
Total $ (885,021) $ 1,341,374