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Commitments and Contingencies (Tables) | 6 Months Ended
--- | ---
Mar. 31, 2013
SCHEDULE OF CAPITAL COMMITMENTS [Table Text Block] |
|  | September 30, |  |  | March 31, |
|  | 2012 |  |  | 2013 |
For construction of buildings | $ | 10,820,593 |  | $ | 317,186 |
For purchases of equipment |  | 3,630,112 |  |  | 2,379,826 |
| $ | 14,450,705 |  | $ | 2,697,012 |
SCHEDULE OFGUARANTEES [Table Text Block] |
|  | September 30, |  |  | March 31, |  |  | Guarantee |
Guarantee for |  | 2012 |  |  | 2013 |  |  | Period |
Shenzhen Tongli Hi-tech Co. Ltd. - a non-related party | $ | 2,386,369 |  | $ | - |  |  | 4/1/2012-3/31/2013 |
Tianjin Huaxiahongyuan Ltd. - a non-related party |  | 2,386,369 |  |  | 2,416,393 |  |  | 4/25/2012-4/25/2015 |
Shenzhen Yasu Technology Co. Ltd. - a non-related party |  | 9,545,476 |  |  | 9,665,571 |  |  | 5/24/2012-6/25/2015 |
Shenzhen Langjin - a non-related party (Note5(b)) |  | 9,545,476 |  |  | 9,665,571 |  |  | 8/15/2011-8/14/2014 |
Tianjin BAK New Energy Research Institute Co., Ltd.- a related party |  | 11,247,753 |  |  | 6,443,714 |  |  | 7/2/2012-10/15/2013 |
| $ | 35,111,443 |  | $ | 28,191,249 |  |  |  |
SCHEDULE OF DISCOUNTED BANK ACCEPTANCE BILLS [Table Text Block] |
|  | September 30, |  |  | March 31, |
|  | 2012 |  |  | 2013 |
Bank acceptance bills | $ | 21,962,849 |  | $ | 41,002,935 |

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