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Intangible Assets (Detail) - Schedule of intangible assets (USD $)
Sep. 30, 2012
Dec. 31, 2011
Dec. 31, 2010
Less: accumulated amortization $ (134,467) $ (97,737) $ (72,587)
1,220,310 724,465 471,812
Land Use Right [Member]
     
Intangible assets, gross 1,104,777 572,202 544,399
Customer Relationships [Member]
     
Intangible assets, gross 50,000 50,000 0
Trademarks [Member]
     
Intangible assets, gross $ 200,000 $ 200,000 $ 0