Indoor air quality is becoming more important than previously, especially as people spend the majority of their time inside homes or workplaces. A key ingredient that influences indoor air quality could be the cleanliness from the air ducts—the hidden network that circulates heated or cooled air after a building. Air https://kanban.xsitepool.tu-freiberg.de/k7bGkgQkSLOzgig2XHVYOg/