Industrial ventilation system on roof of skyscraper or high buildings. Fan turns in protective casing. Heating, ventilation and air
Industrial ventilation system at the enterprise. Fan turns in a protective casing
Fan turns in protective casing on roof of skyscraper or high buildings. Heating, ventilation and air conditioning (HVAC). Industrial ventilation system
Car repair disassembling the ventilation system. A repairman disassembling the engine ventilation system of a car. Car reparation and test. A mechanic testing engine ventilation system.
4K Factory Ventilation roof fan
4K Factory Ventilation roof fan
Supermarket ventilation system on blue sky. Large aluminum pipes for ventilation systems. Air purification system for a large children's supermarket
NEW
Ceiling fan rotating in venue or hangar. Air ventilation and cooling of interior. Wide shot
NEW
Ceiling fan rotating in venue or hangar and air Circulation. electric ceiling fan for air ventilation and cooling in interior