best
black
building
business
chemical
color
column tower
construction
distillery
eco
electricity
engineering
equipment
factory
fuel
gas
good
graphic
heavy
icon
industrial
industrial building
industrial electrician
industrial plant
industry
isolated
leaf
manufacture
new
nuclear
object
oil
petrochemical
petrol
pictogram
pipe
pipeline
plant
pollution
power
power station
refinery
set
shadow
sign
smoke
storage
structure