Tag Archives: Choosing an Air Filtration System

How High Efficiency Air Filters Can Help Save the People of Onitsha

Of all the cities and urbanized areas in the world suffering from high air pollution levels, perhaps no place needs high efficiency filters more than the Nigerian city of Onitsha.  Onitsha, a place that few people outside of Africa and Nigeria have ever heard mentioned, bears the distinction of having the worst air pollution levels […]