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3. ACCOUNTS RECEIVABLE
9 Months Ended
Sep. 30, 2017
Notes to Financial Statements  
3. ACCOUNTS RECEIVABLE
   

September 30,

2017

   

December 31,

2016

 
Accounts receivable   $ 2,963,925     $ 3,044,652  
Allowances for doubtful accounts     (40,544 )     (36,499 )
    $ 2,923,381     $ 3,008,153