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13. INCOME TAXES (Tables)
6 Months Ended
Jun. 30, 2013
Income Tax Disclosure [Abstract]  
Schedule of components of the provision for income taxes
  Three-Month Period Ended June 30,   Six-Month Period Ended June 30,  
  2013   2012   2013   2012  
Current taxes – PRC   $ 2,048,722     $ 1,892,567     $ 2,791,042     $ 3,148,833  
Deferred taxes – PRC     -       82,622       -       160,826  
    $ 2,048,722     $ 1,975,189     $ 2,791,042     $ 3,309,659  
Schedule of income tax expenses reconciliation
  Three-Month Period Ended June 30,   Six-Month Period Ended June 30,
Reconciliations 2013   2012   2013   2012
Statutory income tax rate   25 %     25 %     25 %     25 %  
Non-deductible expenses   1 %     0 %     1 %     0 %  
US federal net operating loss   2 %     1 %     2 %     2 %  
Effective tax rate   28 %     26 %     28 %     27 %  
Schedule of deferred tax assets and liabilities
    June 30,     December 31,  
  2013     2012  
Deferred tax liabilities   $ -     $ -  
                 
Deferred tax assets:                
Allowance for obsolete and slow-moving inventories   $ 7,094     $ 6,973  
Impairment on property, plant and equipment     472,812       464,778  
Exploration costs     1,812,721       1,781,921  
Compensation costs of unexercised stock options     1,990,360       1,809,378  
US federal net operating loss     8,876,646       8,809,935  
Total deferred tax assets     13,159,633       12,872,985  
Valuation allowance     (10,867,006 )     (10,619,313 )
Net deferred tax asset   $ 2,292,627     $ 2,253,672  
                 
Current deferred tax asset   $ 7,094     $ 6,973  
Long-term deferred tax asset   $ 2,285,533     $ 2,246,699