Inventory

3 Months Ended

Mar. 31, 2018

Notes

Inventory

6.  Inventories are stated at the lower of cost or net realizable value, cost being determined by the first-in, first-out method.  A summary of inventories is as follows: 

	March 31, 2018	December 31, 2017
Raw material	$              1,756,392	$                1,812,603
Work-In-Process	1,651,849	1,604,867
Finished Goods	1,749,437	1,674,630
Inventory, Gross	5,157,678	5,092,100
Valuation reserves	(561,000)	(564,000)
Inventory, Net	$              4,596,678	$               4,528,100