Dear Gorge,
This is Fidel from Shenzhen Taluer Technology Co. Ltd, which is professional manufacturer of posture control electric skateboard.
We have strong product development department, our skateboard is designed and manufactured by ourselves.
Walnut is Chinese company, it is not America company. Walnut is in Shenzhen. We Taluer lauch the new posture control electric skateboard almost with theirs in same time.