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3. ACCOUNTS RECEIVABLE (Details) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Accounts Receivable Details    
Accounts receivable $ 2,363,492us-gaap_AccountsReceivableGrossCurrent $ 2,056,964us-gaap_AccountsReceivableGrossCurrent
Allowances for doubtful accounts (41,119)us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent (44,849)us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Total $ 2,322,373us-gaap_AccountsReceivableNetCurrent $ 2,012,115us-gaap_AccountsReceivableNetCurrent