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Inventories
 9 Months Ended
Jun. 30, 2013
Inventories [Text Block]

4. Inventories

Inventories as of September 30, 2012 and June 30, 2013 consisted of the following:

    September 30,     June 30,  
    2012     2013  
             
Raw materials $ 19,999,192   $ 13,080,231  
Work-in-progress   13,912,685     12,423,211  
Finished goods   31,471,952     35,328,551  
             
  $ 65,383,829   $ 60,831,993  

During the three months ended June 30, 2012 and 2013, obsolete inventories write-downs to lower of cost or market of $2.4 million and $12.7 million respectively were charged to cost of revenue.

During the nine months ended June 30, 2012 and 2013, obsolete inventories write-downs to lower of cost or market of $4.4 million and $38.1 million respectively were charged to cost of revenue.