XML 62 R13.htm IDEA: XBRL DOCUMENT v3.20.4
Advances to Suppliers, Net
 12 Months Ended
Sep. 30, 2020
Major Suppliers [Abstract]  
ADVANCES TO SUPPLIERS, NET
6. ADVANCES TO SUPPLIERS, NET

As of September 30, 2019 and 2020, advances to suppliers and allowance for doubtful accounts consisted of the following:


   As of September 30, 
   2019   2020 
Prepayment for purchase of battery packs  $-   $1,585,682 
Prepayment for purchase of e-bicycles materials   3,322,652    956,192 
Prepayment for purchase of battery cells for trading business   3,081,910    84,354 
Prepayment for service fees related to e-bicycles manufacturing licenses   529,309    120,936 
Others   9,800    38,650 
Less: allowance for doubtful accounts   (80,975)   (84,354)
Advances to suppliers, net  $6,862,696   $2,701,460