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Inventories
 9 Months Ended
Jun. 30, 2016
Inventories [Text Block]
4.

Inventories

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

      September 30,     June 30,  
      2015     2016  
  Raw materials $ 712,713   $ 2,894,948  
  Work in progress   1,441,368     2,063,877  
  Finished goods   903,494     6,006,688  
    $ 3,057,575   $ 10,965,513  

During the three months ended June 30, 2015 and 2016, write-downs of obsolete inventories to lower of cost or market of nil and $116,383 respectively, were charged to cost of revenues.

During the nine months ended June 30, 2015 and 2016, write-downs of obsolete inventories to lower of cost or market of nil and $355,418 respectively, were charged to cost of revenues.