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Short-term Bank Loans (Narrative) (Details) (USD $) | 6 Months Ended
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Mar. 31, 2013 M
Short-term Bank Loans 1 | $ 156,154,525
Short-term Bank Loans 2 | $ 162,786,110
Short-term Bank Loans 3 | 4.40%
Short-term Bank Loans 4 | 6.90%
Short-term Bank Loans 5 | 6
Short-term Bank Loans 6 | 12

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