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Prepayment and Other Current Assets (Details) (USD $)
Jun. 30, 2012
Dec. 31, 2011
Prepayment    
Prepayment to suppliers $ 3,325,391 $ 3,633,674
Other Current Assets    
Deferred expenses 25,630   
Offering costs, net 517,323 914,594
Other Assets, Current $ 542,953 $ 914,594