Shenzhen Realtime show their balance scooter factory with assembly and testing lines. People ride those around the world, the speed can go up to 12km per hour, with 36W 4.4AH battery (charging time 2 hours), the cruising radius they say is up to 30km. The net weight of a smart balance wheel scooter is around 12kg, the Maximum load weight up to 125kg and maximum climbing angle is 15 degrees. They say that it is convenient or fun to ride those indoors at exhibitions, airports, in big office buildings, hotels and etc. Shenzhen Realtime's price is around $180 for minimum orders of around 500pcs, contact them for info.
You can buy it from their amazon shop:
You can contact Shenzhen Realtime here:
Mobile: +86 15814470797 (also work with whatapps and wechat)