CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 24,921,678	$ 26,878,062
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	1,338,540	1,289,649
Share-based compensation to employees and directors	214,475	267,074
Gain on extinguishment of warrant liabilities	(73,291)	(87,255)
Change in fair value of warrants	474,000	(2,554,252)
Deferred income tax benefits	180,702	(19,351)
(Increase) decrease in assets:
Accounts receivable	(75,526)	9,826,535
Bills receivable		535,170
Prepayments for raw material purchases	3,949,625	(23,343,711)
Other receivables, deposits and prepayments	402,111	(525,338)
Inventories	(2,327,659)	(1,298,889)
Increase (decrease) in liabilities:
Accounts payable	(899,804)	2,513,027
Other payables and accruals	(286,113)	(430,361)
Income taxes payable	201,621	(366,207)
Net cash provided by operating activities	28,020,359	12,684,153
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property, plant and equipment	(2,274,852)	(506,313)
Addition to construction in progress	(4,650,631)	(6,120,004)
Net cash used in investing activities	(6,925,483)	(6,626,317)
CASH FLOWS FROM FINANCING ACTIVITIES
Repurchase of common stock		(2,126,597)
Proceeds from a related party		140,000
Proceeds from exercise of warrants		1,898,049
Dividend paid	(992,846)
Net cash used in financing activities	(992,846)	(88,548)
Foreign currency translation adjustment	(550,690)	2,150,410
INCREASE IN CASH AND CASH EQUIVALENTS	19,551,340	8,119,698
CASH AND CASH EQUIVALENTS, at the beginning of the period	105,637,627	90,609,340
CASH AND CASH EQUIVALENTS, at the end of the period	125,188,967	98,729,038
MAJOR NON-CASH TRANSACTIONS:
Share-based compensation to employees and directors	214,475	267,074
Issuance of common stock to settle warrant liabilities	311,704	4,895,934
SUPPLEMENTAL DISCLOSURE INFORMATION
Cash paid for interest		70,480
Cash paid for income taxes	$ 8,744,632	$ 8,835,772