Property, Plant and Equipment (Details) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Balance Sheet Related Disclosures [Abstract]
Machinery and equipment	$ 9,761,009	$ 9,678,543
Electronic equipment	2,482,774	2,431,834
Transportation equipment	166,405	182,250
Workshop reconstruction	175,167	173,928
Leasehold improvements	2,668,915	2,547,847
Computer equipment	97,127	96,982
Office equipment	707,946	614,710
Property and equipment, gross	16,059,343	15,726,094
Less: Accumulated depreciation	(10,315,467)	(9,465,419)
Property, plant and equipment, net	$ 5,743,876	$ 6,260,675

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount, at the balance sheet date, of long-lived, depreciable assets that are an addition or improvement to assets held under lease arrangement.

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Gross amount, as of the balance sheet date, of long-lived, depreciable assets used in the production process to produce goods and services.

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Gross amount, at the balance sheet date, of long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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