... ,fine quality,satisfying service CE certificate Portable blower, Portable ventilator(portable blower,air blower,exhaust fan) Size:8" 10"12" ... situation for ventilator. with good insulation, high pressure and large air volume character. Portable ventilator connect with flexible ... ship building or welding, laboratory ,warehouse to ventilate waste air,harmful gas,dust ect. Model specification (mm)voltage( ...