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Prepaid Expenses and Other Current Assets, Net
12 Months Ended
Sep. 30, 2021
Other Income and Expenses [Abstract]  
PREPAID EXPENSES AND OTHER CURRENT ASSETS, NET

7. PREPAID EXPENSES AND OTHER CURRENT ASSETS, NET

 

As of September 30, 2020 and 2021, prepaid expenses and other current assets consisted of the following: 

 

    As of September 30, 
    2020   2021 
Prepaid construction fee(1)   $
-
   $384,425 
Prepaid exhibition fee    
-
    80,796 
Prepaid rental fee    53,784    74,288 
Prepaid IPO related expense    759,365    
-
 
Receivable from disposal of a production line    14,394    
-
 
Others    67,924    70,093 
Less: allowance for doubtful accounts    (14,394)   
-
 
Prepaid expenses and other current assets   $881,073   $609,602 

 

(1)The balance represented prepaid construction fee for plant maintenance and renovation.