XML 33 R14.htm IDEA: XBRL DOCUMENT v3.8.0.1
PREPAID EXPENSE AND OTHER CURRENT ASSETS
 12 Months Ended
Dec. 31, 2017
PREPAID EXPENSE AND OTHER CURRENT ASSETS [Abstract]  
PREPAID EXPENSE AND OTHER CURRENT ASSETS
6. PREPAID EXPENSE AND OTHER CURRENT ASSETS
 
Prepaid expense and other current assets consist of the following:
 
 
 
December 31,
 
 
 
2016
 
2017
 
Spare parts
 
$
5,732,914
 
$
6,308,655
 
Prepaid value added tax (“VAT”)
 
 
1,808,141
 
 
627,463
 
Prepaid insurance fee
 
 
259,650
 
 
333,425
 
Others
 
 
226,962
 
 
913,024
 
Total
 
$
8,027,667
 
$
8,182,567