機器
boiler
boiler room
central
circulation
connection
construction
control
copper
distribution
electric
energy
engineering
equipment
faucet
gas
heat
heating
home
hot
hotel
house
hvac
hydraulic
independent
industrial
industry
installation
interior
iron
manometer
membrane
metal
modern
pipe
pipeline
pipes
piping
power
pressure
pump
room
service
system
technology
treatment
tube
valve
water
working