Inventories (Tables)

12 Months Ended

Dec. 31, 2017

Inventory Disclosure [Abstract]

Inventories

Inventories consist of the following at December 31, 2017 and 2016:

	2017		2016
Raw materials	$	582,816	$	531,053
Work in progress		453,890		370,740
Finished goods		810,040		855,991
Total	$	1,846,746	$	1,757,784