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Summary of Significant Accounting Policies - Schedule of Allowance for Doubtful Accounts (Details) - USD ($)
 6 Months Ended 12 Months Ended
Jun. 30, 2018
Dec. 31, 2017
Accounting Policies [Abstract]    
Allowance for doubtful accounts, beginning $ 2,981,705 $ 2,625,765
Increase in allowance for doubtful accounts 28,155 180,305
Foreign exchange difference (74,446) 175,635
Amounts recovered during the period (50,515)
Allowance for doubtful accounts, ending $ 2,884,899 $ 2,981,705