CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenue	$ 167,012,527	$ 75,502,350	$ 303,943,623	$ 138,723,052
Cost of goods sold	(147,365,064)	(61,002,044)	(267,388,087)	(112,401,462)
Gross profit	19,647,463	14,500,306	36,555,536	26,321,590
Selling expenses	(668,366)	(570,420)	(1,191,402)	(1,021,297)
General and administrative expenses	(1,339,062)	(1,484,893)	(2,912,374)	(2,778,496)
Income from operations	17,640,035	12,444,993	32,451,760	22,521,797
Other income (expenses):
Interest income	136,941	61,065	270,046	94,416
Interest expenses	(49,014)	(40,288)	(70,480)	(69,458)
Gain on extinguishment of warrant liabilities	26,531		87,255	135,369
Change in fair value of warrants	1,179,151	888,975	2,554,252	2,234,829
Other income (expenses)	23,879	(68,397)	99,830	(68,397)
Total other income (expenses), net	1,317,488	841,355	2,940,903	2,326,759
Income before income tax	18,957,523	13,286,348	35,392,663	24,848,556
Provision for income tax	(4,591,447)	(3,388,056)	(8,514,601)	(6,093,706)
Net income	14,366,076	9,898,292	26,878,062	18,754,850
Other comprehensive income:
Foreign currency translation adjustment	2,344,495	698,345	4,009,012	746,801
Comprehensive income	$ 16,710,571	$ 10,596,637	$ 30,887,074	$ 19,501,651
Earnings per share
Basic	$ 0.48	$ 0.35	$ 0.90	$ 0.70
Diluted	$ 0.48	$ 0.34	$ 0.89	$ 0.68
Weighted average number of shares outstanding
Basic	29,872,934	28,484,091	29,865,896	26,625,272
Diluted	30,111,142	29,326,571	30,200,087	27,477,388