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Inventories (Tables)
12 Months Ended
Sep. 30, 2020
Inventory Disclosure [Abstract]  
Schedule of Inventories consisted
   As of September 30, 
   2019   2020 
Finished goods(1)  $394,200   $610,751 
Raw materials(2)   2,415,320    237,453 
Others   998    19,548 
Inventories  $2,810,518   $867,752 
(1) Finished goods includes battery packs and e-bicycles.
(2) Raw materials mainly include battery cells purchased by the Company for battery packs assembling and e-bicycles production.