Which series of models of No.9 electric vehicle use the patented pattern developed by his family? What are the advantages of this patented pattern?

It is understood that at present, the No.9 electric B series has issued a patent for anti-skid pattern. Patent pattern not only reduces the resistance between the tire surface and the ground, but also ensures the stability of grip performance without losing comfort. ∞ According to the tire shape, the daily drop is smaller when the ground contact area is increased, the tire surface is not easy to deform, and the overall comfort of the patented tire will be better.