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Concentration of Risks (Tables)
12 Months Ended
Dec. 31, 2018
Concentration of Risks  
Schedule of business supplier risk

 

 

 

 

 

 

 

 

 

 

For the years ended December 31,

Supplier

    

2017

    

2018

A

 

*

 

550,832

B

 

459,982

 

491,798

C

 

81,009

 

*

 


*     Less than 10%