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5. Property and equipment (Details Narrative) (USD $)	3 Months Ended		9 Months Ended
5. Property and equipment (Details Narrative) (USD $)	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Property And Equipment Details Narrative
Depreciation expense			$ 2,460,442	$ 2,456,928
General and administrative expense	22,742	26,045	66,795	79,284
Bank loans	$ 6,364,562		$ 6,364,562		$ 20,940,911

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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