Concentrations and Risks (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Company's revenues as per geographic areas
Net revenue	$ 59,129,485	$ 47,195,031	$ 137,440,975	$ 100,421,204
The People's Republic of China [Member]
Company's revenues as per geographic areas
Net revenue	40,694,314	29,320,073	100,376,413	59,828,555
Germany [Member]
Company's revenues as per geographic areas
Net revenue	3,305,231	3,393,413	7,676,564	8,858,106
United Kingdom [Member]
Company's revenues as per geographic areas
Net revenue	4,961,895	4,588,231	7,826,529	7,953,390
Europe-Other [Member]
Company's revenues as per geographic areas
Net revenue	3,134,666	3,189,555	7,102,281	7,753,988
Japan [Member]
Company's revenues as per geographic areas
Net revenue	5,306,554	2,416,434	9,005,388	8,523,582
United States [Member]
Company's revenues as per geographic areas
Net revenue	$ 1,726,825	$ 4,287,325	$ 5,453,800	$ 7,503,583