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Significant Concentrations
 12 Months Ended
Sep. 30, 2013
Significant Concentrations [Text Block]
21. 

Significant Concentrations


(a)

Customers and Credit Concentrations

   
 

The Company had only one customer that individually comprised 10% or more of net revenue for the year ended September 30, 2013 as follows:


      2012     2013  
                           
  Dongguan Yulong Telecom Technology Co., Ltd. $  *     *   $ 21,269,794     11.4%  

* Comprised less than 10% of net revenue for the year ended September 30, 2012.

The Company had two customers that individually comprised 10% or more of accounts receivable as of September 30, 2012 and 2013 as follows:

      2012     2013  
                           
  Shenzhen DRN Battery Co., Ltd. $  **     **   $ 5,787,787     11.6%  
  Beijing Beny Wave Technology Ltd. $  **     **   $ 6,811,680     13.7%  

 

** Comprised less than 10% of accounts receivable as of September 30, 2012.

   
(b)

Credit Risk

   
 

Financial instruments that potentially subject the Company to a significant concentration of credit risk consist primarily of cash and cash equivalents and pledged deposits. As of September 30, 2012 and 2013, substantially all of the Company's cash and cash equivalents and pledged deposits were held by major financial institutions located in the PRC, which management believes are of high credit quality.