... Ventilator,centrifugal ventilatorIntroduction of centrifugal ventilator,centrifugal fan,fan,ventilator, blower,air blower,exhaust fan,ventilation fanFRP is a new-type composite ... prevent from weight add and state from air blower, cause air blower not to be out of shape, Cause and ... sucking the solid impurity definitely, user can in air blower exit place installs and protects the filter to prevent ...