Annual report pursuant to Section 13 and 15(d)

D. ACCOUNTS RECEIVABLE (Details)

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D. ACCOUNTS RECEIVABLE (Details) (USD $)
Dec. 31, 2013
Dec. 31, 2012
Components of accounts receivable    
Accounts receivable $ 1,816,722 $ 3,096,914
Allowance for doubtful accounts (156,966) (70,807)
Accounts receivable, net $ 1,659,756 $ 3,026,107