Quarterly report pursuant to Section 13 or 15(d)

REVENUE - Disaggregation of Revenue (Details)

v3.21.1
REVENUE - Disaggregation of Revenue (Details) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Disaggregation of Revenue [Line Items]    
Return period 90 days  
Total Revenues $ 5,092,349 $ 7,447,142
Minimum    
Disaggregation of Revenue [Line Items]    
Product warranty term 90 days  
Maximum    
Disaggregation of Revenue [Line Items]    
Product warranty term 2 years  
Electronics    
Disaggregation of Revenue [Line Items]    
Total Revenues $ 1,851,799 2,657,087
Manufactured    
Disaggregation of Revenue [Line Items]    
Total Revenues 236,810 400,858
Re-Sell    
Disaggregation of Revenue [Line Items]    
Total Revenues 2,568,926 3,803,013
Service    
Disaggregation of Revenue [Line Items]    
Total Revenues $ 434,814 $ 586,184