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Inventories
 6 Months Ended
Mar. 31, 2016
Inventories [Text Block]
4.

Inventories

   
 

Inventories as of September 30, 2015 and March 31, 2016 consisted of the following:

    September 30,     March 31,  
    2015     2016  
Raw materials $ 712,713   $ 1,854,690  
Work in progress   1,441,368     1,637,031  
Finished goods   903,494     1,068,019  
  $ 3,057,575   $ 4,559,740  

 

During the three months ended March 31, 2015 and 2016, write-downs of obsolete inventories to lower of cost or market of nil and $96,910 respectively, were charged to cost of revenues.

   
 

During the six months ended March 31, 2015 and 2016, write-downs of obsolete inventories to lower of cost or market of nil and $239,035 respectively, were charged to cost of revenues.