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Prepayments and Other Current Assets (Details) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Summary of prepayments and other current assets    
Prepaid NYSE MKT annual fee $ 6,875 $ 18,125
Recoverable VAT 4,784,074 4,776,962
Prepaid insurance 55,922 61,357
Prepayment for purchase of materials 77,445 206,930
Prepaid land lease 475,541   
Others 1,848 7,841
Prepayments and other current assets $ 5,401,705 $ 5,071,215