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Accrued expenses and other payable and Obligations arising from loan guarantees (Narrative) (Details) | 3 Months Ended
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Dec. 31, 2012 USD ($) | Dec. 31, 2012 CNY
Accrued Expenses And Other Payables 2 | $ 1,224,000 |
Accrued Expenses And Other Payables 3 | 2,181,000 |
Accrued Expenses And Other Payables 4 |  | 16,000,000
Accrued Expenses And Other Payables 5 | 2,567,683 |
Accrued Expenses And Other Payables 6 |  | 30,000,000
Accrued Expenses And Other Payables 7 | 4,814,404 |
Accrued Expenses And Other Payables 8 |  | 46,000,000
Accrued Expenses And Other Payables 9 | $ 7,360,706 |

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