5. PROPERTY, PLANT AND EQUIPMENT, NET (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Abstract]
Mineral rights	$ 6,334,277	$ 6,318,750
Buildings	50,905,337	40,974,528
Plant and machinery	166,121,329	136,862,383
Motor vehicles	9,140	7,024
Furniture, fixtures and office equipment	4,777,044	4,057,356
Total	228,147,127	188,220,041
Less: Accumulated depreciation and amortization	(62,204,585)	(41,019,301)
Net book value	$ 165,942,542	$ 147,200,740

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 of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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