Pollution is no longer just an urban problem, thanks to the proliferation of wildfires during the summer and emissions from factories and even vehicles. Together these trends have bolstered demand for air filters. Global spending on air filters will surpass $20 billion by the year 2021, according to TechSci Research, citing consumers' growing awareness of deteriorating air quality. While this spending includes air filters that attach to heating, ventilation and air conditioning systems Read more [...]