CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 11,475,012	$ 12,511,986
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	657,320	622,755
Share-based compensation	112,875	146,281
Gain on extinguishment of warrant liabilities	(73,291)	(60,724)
Change in fair value of warrants	430,000	(1,375,101)
Deferred income tax benefits	179,426	(29,355)
(Increase) decrease in assets:
Accounts receivable	2,829,666	(6,284,812)
Bills receivable		531,747
Prepayments for raw material purchases	(6,020,960)
Other receivables, deposits and prepayments	879,411	(667,402)
Inventories	(2,056,628)	(6,706,922)
Increase (decrease) in liabilities:
Accounts payable	(889,271)	5,073,347
Other payables and accruals	(371,130)	(1,486,687)
Income taxes payable	(467,079)	(969,219)
Net cash provided by operating activities	6,685,351	1,305,894
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property, plant and equipment	(146,645)	(178,897)
Addition to construction in progress	(3,754,080)	(2,867,317)
Deposits for plant and equipment		(29,249)
Net cash used in investing activities	(3,900,725)	(3,075,463)
CASH FLOWS FROM FINANCING ACTIVITIES
Repurchase of common stock		(926,250)
Proceeds from exercise of warrants		1,898,050
Dividend paid	(496,423)
Net cash (used in) provided by financing activities	(496,423)	971,800
Foreign currency translation adjustment	68,258	890,414
INCREASE IN CASH AND CASH EQUIVALENTS	2,356,461	92,645
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	107,994,088	90,701,985
MAJOR NON-CASH TRANSACTION:
Share-based compensation to employees and directors	112,875	146,281
Issuance of common stock to settle warrant liabilities	311,704	4,722,948
SUPPLEMENTAL DISCLOSURE INFORMATION
Cash paid for interest		21,466
Cash paid for income taxes	$ 4,564,999	$ 4,865,045