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3. Inventories (Details) - USD ($)
Sep. 30, 2017
Dec. 31, 2016
Inventories Details    
Raw materials $ 1,287,621 $ 888,830
Work in process 209,694 27,708
Finished goods 3,809,347 4,010,074
Total inventories $ 5,306,662 $ 4,926,612