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Rational of planning,Rigorous of design

Clean room (non-unidirectional flow)
Class 1k ~ 300k level clean room airflow direction and more than 100 different clean room, indoor air is uneven flow velocity was not parallel, with reflux and eddy current, it depends mainly on clean indoor air flow continuously diluted air, the indoor air with dust filter to achieve gradual purification. Different purification level clean room, mainly by air filtration efficiency per unit time to achieve.