"Effective" airflow and ventilation" are "fundamentally" "vital" to maintaining" the "specified" level of "purity" within a cleanroom". The system" must carefully" "control" "contaminants" by constantly" "exchanging" https://the-role-of-airflow-in-c410773.wiki-jp.com/2410818/airflow_and_ventilation_the_foundation_of_cleanroom_purity