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Property, Plant and Equipment (Details Textual) (USD $)	3 Months Ended		12 Months Ended
Property, Plant and Equipment (Details Textual) (USD $)	Mar. 31, 2013 T	Mar. 31, 2012	Dec. 31, 2012
Property, Plant and Equipment (Textual)
Property plant and equipment pledged for long term loan	$ 9,025,899		$ 9,316,645
Production capacity of manufacturing equipment PM 8 (per year)	15,000
Long term loan of third party	1,515,974		1,505,881
Long term loan of third party expiration date	Feb. 26, 2014		Feb. 26, 2014
Depreciation and amortization	1,932,853	1,959,302	1,959,302
Land use rights [Member]
Property, Plant and Equipment (Textual)
Lease term	50 years
Number of land use rights	2
Property plant and equipment pledged for long term loan	$ 7,431,490		$ 7,419,614
Land use right one [Member]
Property, Plant and Equipment (Textual)
Lease expiration year	2053
Land use right two [Member]
Property, Plant and Equipment (Textual)
Lease expiration year	2061

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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