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Inventories (Details) - USD ($) | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Inventory [Line Items] |  |
Raw materials | $ 3,310,310 | $ 2,770,636
Work in Process | 1,942,600 | 2,198,981
Finished Goods | 13,889,328 | 13,723,090
Allowance for excess quantities | (794,227) | (822,796)
Total inventories | $ 18,348,011 | $ 17,869,911

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