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REVENUE (Tables)
9 Months Ended
Sep. 30, 2017
REVENUE.  
Schedule of net revenue

                                                                                                                                                                                    

 

 

Nine-month periods
ended September 30,

 

 

 

2016

 

2017

 

Service revenue

 

 

703,284

 

 

1,098,197

 

Equipment sales

 

 

41,007

 

 

12,493

 

​  

​  

​  

​  

 

 

 

744,291

 

 

1,110,690

 

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