Is the air leakage in the windows of the new building a quality problem? How to complain?

Belong to, complain to developers or property companies, and complain to relevant departments.

1. Complain to the developer or property management company: the windows of the new building have obvious quality problems and air leakage. You can complain to the developer or the property management company.

2. Complain to relevant departments: If the developer or the property management company can't solve it, you can complain to relevant departments or the local market quality supervision administration.