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Inventory (Details) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Raw materials $ 3,096,752 $ 3,148,990
Work in process 434,286 493,768
Finished goods 1,403,210 1,412,217
Total Inventory $ 4,934,248 $ 5,054,975