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Inventories, Net (Details) - USD ($)
Jun. 30, 2017
Dec. 31, 2016
Inventory [Line Items]    
Raw materials $ 3,516,267 $ 3,310,310
Work in process 2,508,025 1,942,600
Finished goods 13,760,317 13,889,328
Allowance for excess quantities (837,003) (794,227)
Total inventories $ 18,947,606 $ 18,348,011