What grade does Aviva brand belong to?

Aviva brand belongs to middle and high grade.

Avia is an American brand, founded in 1979, focusing on scientific research and development, with a number of patented sports shoes technologies. The brand has a wide range of patented technologies, including cantilever buffer, DCS, ECS, LTS and so on. Avaya's patents are second only to Nike's technological innovation strength. Avea entered the China market from 20 18, and authorized the new balance leading group to use and promote the brand in Greater China.