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4. PROPERTY, PLANT AND EQUIPMENT, NET
9 Months Ended
Sep. 30, 2018
Property, Plant and Equipment [Abstract]  
4. PROPERTY, PLANT AND EQUIPMENT, NET

Property, plant and equipment, net consist of the following:

 

    September 30,
2018
  December 31,
2017
At cost:                
Mineral rights   $ 4,475,677       4,711,822  
Buildings     60,728,604       67,748,512  
Plant and machinery     147,580,728       200,742,652  
Motor vehicles     6,216       8,792  
Furniture, fixtures and office equipment     3,281,560       4,150,588  
Construction in process     1,306,671       183,036  
Total     217,379,456       277,545,402  
Less: Accumulated depreciation and amortization     (131,560,339 )     (163,597,407 )
Impairment     (18,951,023 )     (18,833,491 )
Net book value   $ 66,868,094     $ 95,114,504  

 

The Company has certain buildings and salt pans erected on parcels of land located in Shouguang, PRC, and such parcels of land are collectively owned by local townships or the government. The Company has not been able to obtain property ownership certificates over these buildings and salt pans. The aggregate carrying values of these properties situated on parcels of the land are $20,768,963 and $27,432,351 as at September 30, 2018 and December 31, 2017, respectively.

 

During the three-month period ended September 30, 2018, depreciation and amortization expense totaled $4,601,338, of which $4,353,824 and $247,514 were recorded in direct labor and factory overheads incurred during plant shutdown and administrative expenses, respectively. During the nine-month period ended September 30, 2018, depreciation and amortization expense totaled $13,974,456, of which $13,210,971 and $763,485 were recorded in direct labor and factory overheads incurred during plant shutdown and administrative expenses, respectively.

 

During the three-month period ended September 30, 2017, depreciation and amortization expense totaled $5,155,187, of which $3,356,534 and $1,798,653 were recorded as cost of net revenue and administrative expenses, respectively. During the nine-month period ended September 30, 2017, depreciation and amortization expense totaled $15,814,006, of which $13,430,768 and $2,383,238 were recorded as cost of net revenue and administrative expenses respectively.