Ceiling lighting 01
Range food
Air conditioner duct piping ceiling
Piping
Duct pipe 002 (horizontal position)
Men and women in work clothes (ventilation fan)
Air conditioner code
Piping
A man in the kitchen and work clothes (ventilation fan)
Men and women in work clothes talking in the kitchen
Ventilation fan
Ceiling 03 store
A man in the kitchen and work clothes (ventilation fan)
Machine room on the roof of a skyscraper
Tile-like wall and exhaust outlet
A man in the kitchen and work clothes (ventilation fan)
Ventilation fan of restaurant, kitchen
Men and women in work clothes talking in the kitchen (ventilation fan)
Kitchen ventilation fan
Men and women in work clothes talking in the kitchen (ventilation fan)
Car Air conditioner outlet Rear rear up
Clay pipe and truck 1
Range hood cleaning
Men and women in work clothes talking in the kitchen
Machine room on the roof of a skyscraper
Female cleaning the house (ventilation fan)
Men and women cleaning the house (ventilation fan)
Ventilator aluminum duct
Concrete exterior wall
Image of replacement / replacement of air conditioner installed in the room
storehouse
Clay pipe and truck 3
Men and women in work clothes talking in the kitchen
Duct pipe 001 (vertical position)
The roof of the building
duct
ventilation fan
kitchen
kitchen
Ventilation duct
A man in the kitchen and work clothes (ventilation fan)
A man in the kitchen and work clothes (ventilation fan)
duct
duct
Ceiling # 5
Piping, air conditioning room
The roof of the building
Ceiling embedded air conditioner
Machine room on the roof of a skyscraper
Clay pipe and truck 2
kitchen
24-hour ventilation
Exchange ventilation fan
Machine room on the roof of a skyscraper
Ventilation duct
The roof of the building
Sky lighting 02
Concrete walls and windows
kitchen range hood
Machine room on the roof of a skyscraper
oily ventilation fan filter
A man in the kitchen and work clothes (ventilation fan)
The roof of the building
City walk spring
Ceiling Store Vertical position
Smoking room
Ceiling duct
Ceiling ventilation fan Duct ventilation fan
ventilation fan
Machine room and heliport on the roof of a skyscraper
Concrete wall background material
Clay pipe and truck 4
Warehouse wall
Warehouse wall and sky
Building and blue sky
vent
Room ventilation
Pipe size 20200131
Duct on the outer wall of the house
ventilation fan dirt
Kitchen exhaust fan 2
Kitchen exhaust fan 1
Machine room on the roof of a skyscraper
Silver duct
Warehouse wall and sky
Warehouse wall
Ventilation 20200131
ventilation fan filter
Machine room and heliport on the roof of a skyscraper
Rear seat air conditioner outlet 3 of a car
ventilation fan
Machine room on the roof of a skyscraper
Factory ventilation port 2
Piping, air conditioning room
General cleaning ventilation fan
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