Inventories (Tables)

6 Months Ended

Jun. 30, 2018

Inventories [Abstract]

Schedule of inventories

	June 30,  2018			December 31, 2017
Raw materials	$	2,150,671		$	998,751
Work-in-process		2,774,628			2,629,570
Finished goods		2,039,186			1,239,168
		6,964,485			4,867,489
Less: reserve for obsolete inventories		(310,193	)		(313,930	)
	$	6,654,292		$	4,553,559