"Effective" airflow and "aeration" are absolutely" "vital" to "preserving" the "specified" level of "sterility" within a cleanroom". The "configuration" must "meticulously" "regulate" "dust" by "continuously" https://unidirectional-airflow-c252834.wikipublicity.com/8836419/airflow_and_ventilation_the_foundation_of_cleanroom_purity