aluminum
アルミニウム
air
angle
background
blower
building
ceiling
concrete
conditioning
construction
design
duct
ducting
engineering
equipment
facilities
facility
factory
foil
home
indoors
industrial
industry
install
insulation
interior
low
material
metal
nobody
object
office
pipe
pipeline
pipes
piping
protection
renovation
repair
safety
shiny
silver
stainless
steel
supply
system
technology
tube
ventilation
view