Inventories (Tables)

9 Months Ended

Sep. 30, 2018

Inventories [Abstract]

Schedule of inventories

	September 30,  2018			December 31, 2017
Raw materials	$	1,563,017		$	998,751
Work-in-process		1,898,527			2,629,570
Finished goods		2,106,214			1,239,168
		5,567,758			4,867,489
Less: reserve for obsolete inventories		(303,424	)		(313,930	)
	$	5,264,334		$	4,553,559