Urban Air Purifier develops devices to purify the environment. Dozens of hospitals, gyms or restaurants such as El Celler de Can Roca have installed their units.

Renfe is also already testing the equipment in one of its underground stations in Madrid. With more than 400,000 euros invoiced in 2023, it hopes to reach one million in 2024. The machines are inspired by bus stop canopies and mupis, urban advertising supports. They suck the air in at the bottom, filter it through different stages inside and finally expel it through the upper area.