Inventories (Tables)

9 Months Ended

Sep. 30, 2017

Inventories

Schedule of major components of inventories

	Sep 30, 2017		Dec 31, 2016
Raw materials	$	1,731,599	$	1,438,471
Work-in-progress		406,683		355,208
Finished goods		1,570,450		1,319,856
Reduction to LIFO cost		(1,162,423)		(1,127,363)
Total Inventories	$	2,546,309	$	1,986,172