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Other Receivables and Prepayments, Net
 12 Months Ended
Dec. 31, 2020
Other Receivables And Prepayments Net [Abstract]  
OTHER RECEIVABLES AND PREPAYMENTS, NET
5.OTHER RECEIVABLES AND PREPAYMENTS, NET

Other receivables and prepayments as of December 31, 2020 and 2019 consist of the following:


   2020   2019 
Rental deposits  $-    $36,846 
Prepaid expenses   74,500    29,939 
Interest receivable   16,130    - 
Advances to employees   83    78 
    90,713    66,863 
Less: reserves for doubtful accounts   (56,771)   (47,996)
Other receivables and prepayment, net  $33,942   $18,867 

During the years ended December 31, 2020, bad debt expense was $26,688, recovery of bad debt was 17,913 due to the disposition of Beijing Dehaier. In 2019 and 2018, bad debts on other receivables were $499 and $16,403, respectively.