FFU laminar flow wind delivery unit can be modularized ,which is able to be windely used in clean rooms ,clean benches ,clean lines ,assembling clean rooms and FFU FFU is adoption of German made EBM ventilator features as low noises,free maintenance,light vibration ,speed adjustment and 40thousand hours of working life .Equipped with two filters,low efficiency and high efficiency filters .Air is indrafted in by the ventilator at the top ,then sent out after purifying through low efficiency and hingh efficiency filters .