CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
NET REVENUE	$ 219,359,379	$ 238,793,030	$ 683,393,531	$ 598,887,183
Cost of sales	(198,261,030)	(213,536,628)	(617,469,949)	(534,284,755)
GROSS PROFIT	21,098,349	25,256,402	65,923,582	64,602,428
Selling expenses	(796,945)	(741,135)	(2,279,486)	(2,168,129)
General and administrative expenses	(1,807,615)	(2,059,027)	(6,219,526)	(5,991,326)
Income from operations	18,493,789	22,456,240	57,424,570	56,442,973
Other income (expenses):
Interest income	165,533	138,081	491,196	418,235
Foreign exchange differences	(917)	40,686	(1,575)	128,362
Gain on extinguishment of warrant liabilities	0	0	3,520	73,291
Change in fair value of warrants	(30,000)	451,000	(65,000)	(23,000)
Other income	147	(538)	35,011	94,241
Total other income (expenses)	134,763	629,229	463,152	691,129
Income before income taxes	18,628,552	23,085,469	57,887,722	57,134,102
Provision for income taxes	(4,689,657)	(5,858,831)	(14,961,830)	(14,985,786)
NET INCOME	13,938,895	17,226,638	42,925,892	42,148,316
OTHER COMPREHENSIVE INCOME:
Foreign currency translation adjustments	1,594,504	(683,771)	6,721,132	(1,685,422)
COMPREHENSIVE INCOME	$ 15,533,399	$ 16,542,867	$ 49,647,024	$ 40,462,894
Net income per share
Basic	$ 0.47	$ 0.58	$ 1.44	$ 1.41
Diluted	$ 0.46	$ 0.58	$ 1.43	$ 1.41
Weighted average number of shares outstanding
Basic	29,831,336	29,820,836	29,825,874	29,814,300
Diluted	29,972,453	29,891,994	29,972,559	29,996,507