機器
blue
business
chemical
chimney
company
construction
dark
dawn sky
distillery
energy
engineering
environment
equipment
factory
fuel
gas
glitter
heavy
hydrocarbon
industrial
industry
liquid
lpg
metal
night
oil
petrochemical
petroleum
pipe
pipe rack
pipeline
plant
pollution
power
pressure
product
production
raw material
refinery
sky
smoke
sphere
station
steel
storage
supply
technology
tower
twilight
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