What Line of Brand Are Alps Doors and Windows?

Alps is a first-line brand with high-end brand positioning.
However, if you open a store, you can compare other brands.
For example, Yibo doors and windows are also first-line brands of doors and windows, which are well-known in China.
Moreover, Yibo doors and windows belong to high-end brands, and the price of mid-end brands is very advantageous.
It is not easy to open a store, but we still need to compare it in many aspects.
Personally, I think Yibo doors and windows are developing for a longer time and the service system is more perfect.