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Other Expenses, Net (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Other Expenses, Net [Abstract]        
Interest expense $ 106,268 $ 43,493 $ 202,284 $ 83,395
Interest income (3,209) (6,418) (7,033) (12,375)
Other losses (gains) 75 (679) (4,382)
Other expenses, net $ 103,134 $ 36,396 $ 195,251 $ 66,638