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Trade receivables, net
9 Months Ended
Sep. 30, 2011
Trade receivables, net
6.
Trade receivables, net

   
As of
   
As of
 
   
September 30,
   
December 31,
 
   
2011
   
2010
 
   
(Unaudited)
       
             
Trade receivables
  $ 3,252,181     $ 2,324,642  
Allowance for doubtful accounts
    (882,169 )     (813,540 )
                 
    $ 2,370,012     $ 1,511,102  

An analysis of the allowance for doubtful accounts for the nine months ended September 30, 2011 and 2010 is as follows :-

   
Nine months ended
September 30,
(Unaudited)
 
   
2011
   
2010
 
             
Balance at beginning of period
  $ 813,540     $ 754,290  
Addition of bad debts expenses, net
    43,729       -  
Translation adjustments
    24,900       13,348  
                 
Balance at end of period
  $ 882,169     $ 767,638