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Prepayments and Other Current Assets (Details) (USD $)
Sep. 30, 2013
Dec. 31, 2012
Summary of prepayments and other current assets    
Prepaid AMEX annual fee $ 15,000 $ 6,875
Recoverable VAT 500,000 4,784,074
Prepaid insurance 123,058 55,922
Prepayment for purchase of materials 6,792 77,445
Prepaid land lease 53,751 475,541
Others    1,848
Prepayments and other current assets, Total $ 698,601 $ 5,401,705