XML 37 R31.htm IDEA: XBRL DOCUMENT v3.3.0.814
5. PROPERTY, PLANT AND EQUIPMENT, NET (Tables)
9 Months Ended
Sep. 30, 2015
Property, Plant and Equipment [Abstract]  
Property, plant and equipment
    September 30, 2015   December 31, 2014
At cost:            
Mineral rights   $ 6,258,632     $ 6,506,668  
Buildings     70,127,755       53,231,127  
Plant and machinery     187,202,515       177,485,689  
Motor vehicles     9,031       9,389  
Furniture, fixtures and office equipment     4,965,702       4,884,991  
Total     268,563,635       242,117,864  
Less: Accumulated depreciation and amortization     (143,122,022 )     (117,767,083 )
Net book value   $ 125,441,613     $ 124,350,781