CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 53,133,533	$ 38,465,975	$ 13,732,698
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	2,294,159	2,171,961	1,652,863
Loss on disposal of property, plant and equipment		124,196
Share-based compensation	498,212	408,772	331,440
(Gain) loss on extinguishment of warrant liabilities	(88,777)	(186,897)	398
Change in fair value of warrants	(3,062,575)	1,448,819	11,877,341
Deferred income tax benefits	(65,136)	(25,638)	(74,621)
(Increase) decrease in assets:
Accounts receivable	3,487,873	(21,166,870)	(5,946,526)
Bills receivable	541,989	(517,114)	322,061
Prepayments for raw material purchases	(21,347,998)
Other receivables, deposits and prepayments	(1,814,309)	475,790	(492,804)
Inventories	1,442,579	1,880,784	(16,939,820)
Increase (decrease) in liabilities:
Accounts payable	(246,640)	915,611	2,932,371
Other payables and accruals	(782,013)	2,433,980	(150,322)
Income taxes payable	(612,900)	3,275,329	1,181,995
Net cash provided by operating activities	33,377,997	29,704,698	8,427,074
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property, plant and equipment and construction in progress	(16,965,626)	(2,258,580)	(5,094,444)
Deposits for plant and equipment	(3,344,274)
Proceeds from disposal of fixed assets		153,095
Payments for land use rights		(9,938,585)
Net cash used in investing activities	(20,309,900)	(12,044,070)	(5,094,444)
CASH FLOWS FROM FINANCING ACTIVITIES
New short-term bank loans			2,196,772
Repayments of short-term bank loans	(2,322,413)		(6,150,962)
Release of restricted cash related to private placement		575,000	1,175,000
Repurchase of common stock	(2,126,597)
Proceeds from exercise of warrants	1,898,050	3,226,300	125,650
Proceeds from public offering of common stock, net of expenses		32,069,517	7,864,000
Net cash (used in) provided by financing activities	(2,550,960)	35,870,817	5,210,460
Foreign currency translation adjustment	4,511,150	2,463,057	29,899
INCREASE IN CASH AND CASH EQUIVALENTS	15,028,287	55,994,502	8,572,989
CASH AND CASH EQUIVALENTS, at the beginning of the year	90,609,340	34,614,838	26,041,849
CASH AND CASH EQUIVALENTS, at the end of the year	105,637,627	90,609,340	34,614,838
MAJOR NON-CASH TRANSACTION:
Share-based compensation to employees and directors	498,212	408,772	331,440
Issuance of common stock to settle warrant liabilities	4,916,088	6,854,964	200,322
SUPPLEMENTAL DISCLOSURE INFORMATION
Cash paid for interest	143,779	131,106	335,335
Cash paid for income taxes	$ 18,056,035	$ 11,198,079	$ 4,140,273