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Segment Information
 12 Months Ended
Sep. 30, 2013
Segment Information [Text Block]
22.

Segment Information

   
 

The Company currently engages in one business segment, the manufacture, commercialization and distribution of a wide variety of standard and customized lithium ion rechargeable batteries for use in a wide array of applications. During the years ended September 30, 2012 and 2013, the Company manufactured five types of Li-ion rechargeable batteries: aluminum-case cell, battery pack, cylindrical cell, lithium polymer cell and high-power lithium battery cell. The Company's products are sold to packing plants operated by third parties primarily for use in mobile phones and other electronic devices. Net revenues for the years ended September 30, 2012 and 2013 were as follows:
   
 

Net revenues by product:


      2012     2013  
            %           %  
  Prismatic cells                        
  Aluminum-case cells $ 76,064,992     37.01%   $ 28,787,919     15.51%  
  Battery packs   55,319,855     26.92%     63,689,388     34.32%  
  Cylindrical cells   45,336,173     22.06%     45,985,570     24.78%  
  Lithium polymer cells   18,325,826     8.92%     30,607,434     16.50%  
  High-power lithium battery cells   10,471,764     5.09%     16,482,249     8.89%  
    $ 205,518,610     100.00%   $ 185,552,560     100.00%  

Net revenues by geographic area:

      2012     2013  
            %           %  
  Mainland China $ 148,680,581     72.34%   $ 143,609,332     77.40%  
  PRC Taiwan   24,101,664     11.73%     13,009,272     7.01%  
  Hong Kong, China   11,718,597     5.70%     10,664,686     5.75%  
  India   9,875,792     4.81%     8,500,609     4.58%  
  Others   11,141,976     5.42%     9,768,661     5.26%  
    $ 205,518,610     100.00%   $ 185,552,560     100.00%  

Substantially all of the Company's long-lived assets are located in the PRC.