CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Revenue	$ 155,570,657	$ 96,337,451	$ 459,514,280	$ 235,060,503
Cost of goods sold	(136,113,727)	(81,215,627)	(403,501,814)	(193,617,089)
Gross profit	19,456,930	15,121,824	56,012,466	41,443,414
Selling expenses	(633,584)	(422,209)	(1,824,986)	(1,443,506)
General and administrative expenses	(1,498,306)	(1,192,225)	(4,410,680)	(3,970,721)
Income from operations	17,325,040	13,507,390	49,776,800	36,029,187
Other income (expenses):
Interest income	135,276	80,289	405,322	174,705
Interest expenses	(38,694)	(30,090)	(109,174)	(99,548)
Exchange expenses	(104,397)	(31,810)	(104,397)	(31,810)
Gain on extinguishment of warrant liabilities			87,255	135,369
Change in fair value of warrants	629,000	(128,994)	3,183,252	2,105,835
Other income (expenses)	670	22,305	100,500	(46,092)
Total other income (expenses), net	621,855	(88,300)	3,562,758	2,238,459
Income before income tax	17,946,895	13,419,090	53,339,558	38,267,646
Provision for income tax	(4,418,812)	(3,563,385)	(12,933,413)	(9,657,091)
Net income	13,528,083	9,855,705	40,406,145	28,610,555
Other comprehensive income:
Foreign currency translation adjustment	3,648,643	1,927,900	7,657,655	2,674,701
Comprehensive income	$ 17,176,726	$ 11,783,605	$ 48,063,800	$ 31,285,256
Earnings per share
Basic	$ 0.45	$ 0.34	$ 1.35	$ 1.04
Diluted	$ 0.45	$ 0.33	$ 1.34	$ 1.01
Weighted average number of shares outstanding
Basic	29,768,403	29,143,432	29,833,041	27,473,883
Diluted	29,976,702	29,968,087	30,124,791	28,318,052