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PROPERTY, PLANT AND EQUIPMENT, NET (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Total	$ 544,326,125	$ 559,006,119
Depreciation of property, plant and equipment	31,361,026	$ 28,007,943	$ 52,250,595
Long-lived asset impairment	1,622,588		$ 158,424,827
Buildings and plant [Member]
Property, Plant and Equipment [Line Items]
Cost	313,290,516	$ 233,230,935
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Cost	389,373,554	351,409,724
Furniture, fixtures and equipment [Member]
Property, Plant and Equipment [Line Items]
Cost	22,418,768	18,469,913
Motor vehicles [Member]
Property, Plant and Equipment [Line Items]
Cost	293,331	257,408
Depreciable Asset [Member]
Property, Plant and Equipment [Line Items]
Less: Accumulated depreciation	(188,680,279)	(169,264,463)
Total	536,695,889	434,103,517
Construction in process [Member]
Property, Plant and Equipment [Line Items]
Cost	$ 7,630,236	$ 124,902,602

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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-Section S99
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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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+ References

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+ References

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-Publisher SEC
-Name Regulation S-X (SX)
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-Section 02
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-Subparagraph a
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