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ALLOWANCES FOR DOUBTFUL RECEIVABLES (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Analysis of allowances for accounts receivable is as follows:      
Beginning of the year $ 1,202,940      
Allowances made during the year 359,733 1,202,940   
Foreign exchange effect 29,794      
Closing balance $ 1,592,467 $ 1,202,940