"Effective" airflow and "exhaust" are "fundamentally" "vital" to "ensuring" the "required" level of "purity" within a cleanroom". The system" must carefully" "regulate" particles" by constantly" "filtering" the air" https://unidirectional-airflow-c964664.getblogs.net/74497119/airflow-and-ventilation-the-foundation-of-cleanroom-purity