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Property, Plant and Equipment (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Schedule of property, plant and equipment
Property, Plant, and Equipment, Gross	$ 198,625,609	$ 155,132,570
Less accumulated depreciation and amortization	(36,977,851)	(32,741,114)
Property, Plant and Equipment, net	161,647,758	122,391,456
Land use rights [Member]
Schedule of property, plant and equipment
Property, Plant, and Equipment, Gross	7,727,124	9,895,081
Building and improvements [Member]
Schedule of property, plant and equipment
Property, Plant, and Equipment, Gross	22,307,565	31,625,816
Machinery and equipment [Member]
Schedule of property, plant and equipment
Property, Plant, and Equipment, Gross	120,552,470	111,857,002
Vehicles [Member]
Schedule of property, plant and equipment
Property, Plant, and Equipment, Gross	485,616	439,007
Construction in progress [Member]
Schedule of property, plant and equipment
Property, Plant, and Equipment, Gross	$ 47,552,834	$ 1,315,664