It is easy to do. Because building materials sales is a link in the circulation of building materials industry production and operation, that is, it belongs to the circulation link of building materials industry, therefore, building materials sales can be classified as building materials industry.

In terms of category, building materials industry belongs to a unit derived category of construction industry.

However, from the perspective of business mode, building materials sales, like other product sales, are all marketing service industries and belong to the scope of commercial services. Now that people's living standards have improved, they all decorate their houses, and building materials industry sales are very easy to do.