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Accounts Receivable, Net
12 Months Ended
Dec. 31, 2020
Receivables [Abstract]  
ACCOUNTS RECEIVABLE, NET
4.ACCOUNTS RECEIVABLE, NET

Accounts receivable as of December 31, 2020 and 2019 consist of the following:


   2020   2019 
Accounts receivable  $43,935   $98,195 
Less: reserve for doubtful accounts   (38,995)   (36,416)
Accounts receivable, net  $4,940   $61,779 

During the year ended December 31, 2020, bad debt expense was $30,572, recovery of bad debt was 27,993 due to the disposal of Beijing Dehaier and during 2019 and 2018, bad debt expense was $10,148 and $5,826 respectively.