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Significant Concentrations | 12 Months Ended
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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.

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- Definition The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6327-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13531-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13537-108611 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6442-108592 + Details
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