Property and Equipment (Tables)

6 Months Ended

Jun. 30, 2016

Property and Equipment [Abstract]

Summary of property and equipment

	Useful life	June 30, 2016			December 31, 2015
Manufacturing equipment	5 - 10 years	$	64,864,789		$	66,381,394
Building and building improvements	5 - 20 years		24,101,262			24,668,268
Vehicles	5 years		190,080			194,552
Office equipment and furniture	5 years		161,601			165,403
			89,317,732			91,409,617
Less: accumulated depreciation			(42,041,431	)		(39,655,653	)
		$	47,276,301		$	51,753,964