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Inventories (Details) (USD $)	12 Months Ended
Inventories (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Inventories
Raw materials	$ 1,299,019	$ 3,230,727
Work in progress	971,404	446,468
Finished goods	8,259,053	4,436,233
Inventories	10,529,476	8,113,428
Idle capacity charged to cost of sales	3,140,091	1,205,179	297,623
Inventory provision included in cost of sales	$ 3,479,453	$ 4,034,169	$ 6,805,541

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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- Definition

Charge to cost of goods sold that represents the reduction of the carrying amount of inventory, generally attributable to obsolescence or market conditions.

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