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3. ACCOUNTS RECEIVABLE (Tables)
12 Months Ended
Dec. 31, 2016
Accounts Receivable Tables  
Accounts Receivable
    2016     2015  
             
Accounts receivable   $ 3,044,652     $ 1,990,283  
Allowances for doubtful accounts     (36,499 )     (35,406 )
    $ 3,008,153     $ 1,954,877