... price,fine quality,satisfying service CE certificate Portable blower, Portable ventilator(portable blower,air blower,exhaust fan) Size:8" 10"12" 14 ... ,special manufactured for underground cable maintainance,shipping making,exhaust for fire fighting, piping construction and in other ... building or welding, laboratory ,warehouse to ventilate waste air,harmful gas,dust ect. Model specification (mm)voltage( ...