"Proper" airflow and "exhaust" are "fundamentally" "vital" to maintaining" the desired" level of cleanliness" within a cleanroom". The system" must "meticulously" "regulate" "contaminants" by constantly" "filtering" https://why-cleanroom-ventilatio709106.wikibuysell.com/2470899/airflow_and_ventilation_the_foundation_of_cleanroom_purity