BTW, here is one of the websites for the new Ninebot Mini Plus here:
http://www.mi.com/scooterplus/
Google Chrome can translate the page from Chinese to English.
One fascinating note from that page, auto-translated into English:
"Ninebot & Segway has a core patent for self-balancing technology; more than 6 million people worldwide use Ninebot & Segway"
Wow, that's a lot of Ninebots/Segways.
I remember when, at SegwayFest DC IIRC, Segway's Doug Field said that new technologies often take about twenty years to become mainstream (think about the automobile, the Internet, etc.)...and Segway seems to be following that same trajectory now.