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Disclosure of detailed information about inventories (Details) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Statements Line Items    
Finished goods $ 230,315 $ 256,185
Raw materials and supplies 3,438,086 3,724,058
Inventory (Notes 6 and 7) $ 3,668,401 $ 3,980,243