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Accounts Receivable
3 Months Ended
Mar. 31, 2018
Receivables [Abstract]  
Accounts Receivable

At March 31, 2018 and December 31, 2017, accounts receivable consisted of the following:

 

   

March 31,

2018

   

December 31,

2017

 
Accounts receivable    $ 27,793     $ 26,762  
Less: Allowance for doubtful accounts             
Total    $ 27,793     $ 26,762  

 

The Company reviews accounts receivable on a periodic basis and makes general and specific allowances when there is doubt as to the collectability of individual balances. No allowance for doubtful accounts was considered necessary at March 31, 2018 and December 31, 2017. At March 31, 2018, $3,130 of accounts receivable were pledged as collateral for borrowings from financial institutions.