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1. NATURE OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
3 Months Ended
Mar. 31, 2014
Accounting Policies [Abstract]  
Schedule of property plant and equipment useful life
   

Useful life

(in years)

Buildings (including salt pans)   8 - 20
Plant and machinery (including protective shells, transmission channels and ducts)   5 - 8
Motor vehicles   5
Furniture, fixtures and equipment   8
Schedule of computation of basic and diluted earnings per share
   

Three-Month Period Ended

March 31,

      2014       2013  
Numerator                
Net income   $ 4,286,338     $ 1,882,965  
                 
Denominator                
Basic: Weighted-average common shares outstanding during the period      38,598,424       38,367,471  
Add: Dilutive effect of stock options     679,533       133,487  
Diluted     39,277,957       38,500,958  
                 
Net income per share                
Basic   $ 0.11     $ 0.05  
Diluted   $ 0.11     $ 0.05