Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

v3.7.0.1
Inventories (Details) - USD ($)
Mar. 31, 2017
Dec. 31, 2016
Inventories    
Finished goods $ 4,607,471 $ 4,132,036
Work in process 266,973 205,116
Raw materials 976,286 1,121,688
Inventory, net 5,850,730 5,458,840
Inventory valuation reserves $ 813,000 $ 960,000