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7. ACCOUNTS PAYABLE AND ACCRUED EXPENSE (Tables)
3 Months Ended
Mar. 31, 2014
Payables and Accruals [Abstract]  
Accounts payable and accrued expenses
    March 31,     December 31,  
    2014     2013  
Accounts payable   $ 4,405,459     $ 3,998,660  
Salary payable     211,559       212,138  
Social security insurance contribution payable     56,663       57,674  
Price adjustment funds     1,020,919       861,071  
Other payables     427,564       516,288  
Total   $ 6,122,164     $ 5,645,831