https://niumobility.freshdesk.com/en/support/solutions/articles/43000041485-niu-smart-escooter-u1
NIU Smart eScooter U1 : NIU - The World's #1 Smart Electric Scooter
smart escooterthe worldniuelectric
https://niumobility.freshdesk.com/en/support/solutions/articles/43000041503-niu-smart-escooter-nqi-gt
NIU Smart eScooter NQi GT : NIU - The World's #1 Smart Electric Scooter
smart escooterthe worldniunqigt