ALLOWANCE FOR DOUBTFUL ACCOUNTS (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Movement of allowances
Closing balance		$ 13,000,601	$ 11,242,208
Allowances for accounts receivable
Movement of allowances
Beginning of the year	38,482,827	47,582,217	9,505,481
Allowances made (reversed) during the year, net	(5,843,084)	(1,897,423)	43,240,595
Accounts written-off against allowances	(8,677)	(7,877,676)	(5,325,908)
Foreign exchange effect	(814,166)	675,709	162,049
Closing balance	31,816,900	38,482,827	47,582,217
Allowances for advances to suppliers
Movement of allowances
Beginning of the year	40,046,830	38,545,487	38,123,721
Allowances made (reversed) during the year, net	4,349	855,066	370,622
Foreign exchange effect	(2,315,751)	646,277	51,144
Closing balance	37,735,428	40,046,830	38,545,487
Allowances for other receivables
Movement of allowances
Beginning of the year	887,024	756,062
Allowances made (reversed) during the year, net	(52,671)	107,533	752,928
Foreign exchange effect	(4,751)	23,429	3,134
Closing balance	$ 829,602	$ 887,024	$ 756,062

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs which have been charged to costs and expenses net of the total of recoveries of amounts due the Entity that had previously been written off as uncollectible using allowances (the valuation accounts that are netted against the cost of an asset to value it at its carrying value) and total of reestablishments of reserves (liabilities established to represent expected future costs) that had previously been utilized.

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- Definition

Total of the foreign exchange effects in a given period to allowances or reserves.

+ References

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- Definition

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

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Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.

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