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4. PROPERTY, PLANT AND EQUIPMENT, NET
6 Months Ended
Jun. 30, 2017
Property, Plant and Equipment [Abstract]  
4. PROPERTY, PLANT AND EQUIPMENT, NET

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

 

    June 30,
2017
  December 31,
2016
At cost:                
Mineral rights   $ 4,544,643     $ 4,438,115  
Buildings     63,448,611       61,656,398  
Plant and machinery     189,225,440       184,544,140  
Motor vehicles     8,480       8,282  
Furniture, fixtures and office equipment     4,662,769       4,553,473  
Construction in process     —         374,790  
Total     261,889,943       255,575,198  
Less: Accumulated depreciation and amortization     (161,177,525 )     (146,844,072 )
Net book value   $ 100,712,418     $ 108,731,126  

 

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 $34,906,905 and $35,184,613 as at June 30, 2017 and December 31, 2016, respectively.

 

During the three-month period ended June 30, 2017, depreciation and amortization expense totaled $5,294,777, of which $5,001,792 and $292,985 were recorded as cost of net revenue and administrative expenses, respectively. During the three-month period ended June 30, 2016, depreciation and amortization expense totaled $6,644,571, of which $6,306,337 and $338,235 were recorded as cost of net revenue and administrative expenses, respectively. During the six-month period ended June 30, 2017, depreciation and amortization expense totaled $10,658,819, of which $10,074,234 and $584,585 were recorded as cost of net revenue and administrative expenses respectively. During the six-month period ended June 30, 2016, depreciation and amortization expense totaled $13,514,292, of which $12,827,797 and $686,495 were recorded as cost of revenue and administrative expenses respectively.