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v3.19.1

Other Expenses, Net (Details) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Other Income and Expenses [Abstract] |  |
Interest expense | $ 114,041 | $ 96,015
Interest income | (2,315) | (3,824)
Other gains |  | (75)
Other expenses, net | $ 111,726 | $ 92,116

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