Indoor air quality has become 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 is the cleanliness from the air ducts—the hidden network that circulates heated or cooled air after a building. Air Duct https://hedgedoc.eclair.ec-lyon.fr/lKoQD-F-QHaZFnTjLbHcTg/