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SEGMENT INFORMATION
12 Months Ended
Dec. 31, 2018
Segment Reporting [Abstract]  
SEGMENT INFORMATION
18. SEGMENT INFORMATION
 
The Group’s chief operating decision maker has been identified as the chief executive officer, who reviews consolidated results when making decisions about allocating resources and assessing performance of the Group. Following the further expansion of module business and entering into the wafer business in 2011, the Group operated and viewed its performance in three segments. However, the module business was disposed in September 2012 and the wafer business was discontinued in September 2018. Therefore, only one segment
- Polysilicon 
remained as of December 31, 2018. All of its revenues are derived in the PRC. The Group’s long-lived assets and operations are all located in the PRC and no geographical information is presented.
 
The following customers individually accounted for 10% or more of revenues:
 
 
 
Year ended December 31,
 
 
 
2016
 
 
2017
 
 
2018
 
Customer A
 
 
*
 
 
$
39,219,089
 
 
$
115,411,965
 
Customer B
 
$
47,696,332
 
 
$
43,258,204
 
 
$
57,858,670
 
Customer C
 
 
*
 
 
$
39,099,677
 
 
 
*
 
  
*
 
Represents less than 10%
 
Total sales to the Group’s largest customers whose sales constitute over 10% of revenue accounted for approximately 24%, 38% and 57% of revenues for the years ended December 31, 2016, 2017 and 2018, respectively. The Group is substantially dependent upon the continued participation of these customers in order to maintain its total revenues. Significantly reduction in the Group’s dependence on these customers is likely to take time and there can be no assurance that the Group will succeed in reducing such dependence.