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Trade Accounts Receivable, net
12 Months Ended
Sep. 30, 2011
Trade Accounts Receivable, net [Text Block]
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Trade Accounts Receivable, net

   
 

Trade accounts receivable as of September 30, 2010 and 2011 consist of the following:


      2010     2011  
  Trade accounts receivable $  98,625,901   $  104,065,501  
  Less: Allowance for doubtful accounts   (23,354,925 )   (26,494,550 )
      75,270,976     77,570,951  
  Bills receivable   10,927,263     10,690,316  
    $  86,198,239   $  88,261,267  

An analysis of the allowance for doubtful accounts for the years ended September 30, 2009, 2010 and 2011 is as follows:

      2009     2010     2011  
                     
  Balance at beginning of year $  5,351,244   $  13,081,331   $  23,354,925  
  Addition of bad debt expense, net   7,727,643     9,828,549     1,960,014  
  Foreign exchange adjustment   2,444     445,045     1,179,611  
                     
  Balance at end of year $  13,081,331   $  23,354,925   $  26,494,550