Quarterly report pursuant to Section 13 or 15(d)

CONCENTRATION - Supplier Concentrations (Details)

v3.20.2
CONCENTRATION - Supplier Concentrations (Details) - Cost of goods sold - Supplier Concentrations
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
CONCENTRATIONS        
Concentration risk (as a percent) 49.63% 86.68% 62.02% 81.09%
Supplier A        
CONCENTRATIONS        
Concentration risk (as a percent) 18.22%   33.09%  
Supplier B        
CONCENTRATIONS        
Concentration risk (as a percent) 15.67%   16.12%  
Supplier C        
CONCENTRATIONS        
Concentration risk (as a percent)   74.08%   81.09%
Supplier D        
CONCENTRATIONS        
Concentration risk (as a percent)   12.60% 12.81%  
Supplier E        
CONCENTRATIONS        
Concentration risk (as a percent) 15.74%