... Ventilator,centrifugal ventilatorIntroduction of centrifugal ventilator,centrifugal fan,fan,ventilator, blower,air blower,exhaust fan,ventilation fanFRP is a new-type ... is streamlined structure that the structure compactness, whole gas flow, Have improved the motive force performance of air. 2 ... wind device , can't touch and wipe . 4.Pipeline should add and support, prevent from weight add and state ...