CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) [Abstract]
Net sales	$ 31,177,616	$ 29,377,682	$ 55,576,988	$ 49,980,465
Cost of sales	(25,443,157)	(23,369,258)	(45,079,349)	(40,299,782)
Gross profit	5,734,459	6,008,424	10,497,639	9,680,683
Research and development expenses	(1,350,997)	(1,233,585)	(2,453,465)	(2,117,931)
Selling and distribution expenses	(1,392,576)	(1,282,499)	(2,787,978)	(2,481,399)
General and administrative expenses, including stock-based compensation	(2,612,855)	(2,263,983)	(5,418,246)	(4,278,468)
Income (loss) on exchange rate difference	(180,010)	153,360	(219,957)	122,030
Gain (loss) of derivative instruments	112,335	(304,147)	222,283	32,956
Total operating expenses	(5,424,103)	(4,930,854)	(10,657,363)	(8,722,812)
Income (loss) from operations	310,356	1,077,570	(159,724)	957,871
Other income	281,236	61,185	497,385	228,218
Interest expenses	(365,146)	(301,123)	(701,412)	(313,441)
Income (loss) before taxes	226,446	837,632	(363,751)	872,648
Income taxes expenses	(159,110)	(362,941)	(207,329)	(416,266)
Net income (loss)	67,336	474,691	(571,080)	456,382
Less: net loss attributable to non-controlling interest	(41,953)	(29,023)	(71,489)	(50,517)
Net income (loss) attributable to the Company	109,289	503,714	(499,591)	506,899
Comprehensive income (loss)
Net income (loss)	67,336	474,691	(571,080)	456,382
Foreign currency translation gain (loss)	526,996	(300,800)	298,942	(155,895)
Comprehensive income (loss)	594,332	173,891	(272,138)	300,487
Less: comprehensive loss attributable to non-controlling interest	(31,257)	(46,997)	(65,475)	(68,449)
Comprehensive income (loss) attributable to the Company	$ 625,589	$ 220,888	$ (206,663)	$ 368,936
Earnings (loss) per share of common stock attributable to the Company
- Basic and diluted	$ 0.01	$ 0.04	$ (0.04)	$ 0.04
Weighted average common shares outstanding
- Basic and diluted	13,582,106	13,582,106	13,582,106	13,582,106