Condensed consolidated statements of cash flows (USD $)	6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flow from operating activities
Net loss	$ (47,854,127)	$ (17,447,802)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	10,022,512	10,326,819
Provision for recovery of doubtful accounts	(2,142,085)	3,686,537
Write-down of obsolete inventories	25,795,764	1,967,738
Impairment charge	11,396,349	2,707,686
Loss arising from loan guarantee	2,811,039	0
Share-based compensation	218,384	474,731
Deferred income taxes	5,792,575	2,110,627
Exchange difference	929,121	1,985
Changes in operating assets and liabilities:
Trade accounts receivable	23,960,665	(13,804,887)
Inventories	(15,212,219)	7,207,565
Prepayments and other receivables	(1,918,491)	(6,886,989)
Recoverable on loan guarantee	(1,407,034)	0
Accounts and bills payable	(6,722,829)	4,528,041
Accrued expenses and other payables	14,374,314	20,036,300
Deferred revenue	(170,027)	(126,347)
Net cash provided by operating activities	19,873,911	14,782,004
Cash flow from investing activities
Decrease/(increase) in pledged deposits	(3,393,661)	3,455,963
Payment of guaranteed loans	(7,294,672)	0
Repayment of guaranteed loans	1,524,657	0
Purchases of property, plant and equipment	(20,800,251)	(10,052,253)
Purchases of intangible assets	(336,507)	(463,779)
Net cash used in investing activities	(30,300,434)	(7,060,069)
Cash flow from financing activities
Proceeds from borrowings	100,957,520	95,395,611
Repayment of borrowings	(99,514,848)	(111,453,961)
Borrowings from related parties	862,854	0
Repayment to related parties	(2,180,599)	0
Proceeds from other long-term loans	8,208,548	0
Net cash (used in) provided by financing activities	8,333,475	(16,058,350)
Effect of exchange rate changes on cash and cash equivalents	25,095	156,857
Net decrease in cash and cash equivalents	(2,067,953)	(8,179,558)
Cash and cash equivalents at the beginning of period	9,271,633	24,858,239
Cash and cash equivalents at the end of period	7,203,680	16,678,681
Supplemental disclosure of cash flow information:
Bills receivable discounted to banks	27,605,690	9,325,325
Cash paid during the period for:
Income taxes	0	0
Interest, net of amounts capitalized	$ 4,346,894	$ 5,345,828