機器
environmental
blue
building
business
chemical
conservation
container
conveyor
dumping
ecological
ecology
energy
environment
equipment
facility
factory
fuel
garbage
indoor
industrial
industry
internal
manufacturing
material
metal
pile
pipe
pipeline
plant
plastic
pollution
power
process
processing
production
pulp
recycle
recycled
recycling
renewal
resource
reuse
sorted
sorting
space
technology
trash
waste
wood