Uumotor question

Hello im new to this forum. Im looking to purchase a new hub motor and controller for e
bike and was thinking on getting it online through uumotor.com. are these guys legit?

some existing info

https://endless-sphere.com/forums/search.php?keywords=uumotor&terms=all&author=&sc=1&sf=titleonly&sk=t&sd=d&sr=topics&st=0&ch=300&t=0&submit=Search

https://endless-sphere.com/forums/search.php?keywords=Uumotor&terms=all&author=&sc=1&sf=all&sk=t&sd=d&sr=posts&st=0&ch=300&t=0&submit=Search

Thanks for the reply. Where is a good place to buy hub motors and controllers online??