機器
alcohol
assembly
automation
background
beer
brewery
brewing
chemical
clean
commercial
compressor
construction
equipment
factory
field
food
gas
huge
industry
insulation
interior
line
machinery
manufacturing
metal
milk
oil
pipe
pipeline
pipework
plant
plumbing
power
process
production
products
pump
refinery
stainless
steel
storage
tank
technique
technology
tube
valve
water
work
zinc