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Other Expenses, Net (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Other Expenses, Net [Abstract]        
Interest expense $ 43,493 $ 44,935 $ 83,395 $ 81,841
Interest income (6,418) (13,410) (12,375) (26,745)
Other gains (679) (226) (4,382) (411)
Other expenses, net $ 36,396 $ 31,299 $ 66,638 $ 54,685