environmental
alternative
blue
building
business
cell
clean
cleaner
cleaning
dirty
eco
ecology
electric
electrical
electricity
energy
engineer
environment
equipment
fix
green
high pressure cleaner
high pressure washer
house
increasing efficiency
industry
innovation
maintenance
male
man working
panel
panels
photovoltaic
photovoltaic cleaning
power
renewable
roof
safety
silicon
solar
solar panel cleaning
sun
sunlight
system
technician
technology
washing
water
water jet
worker
定額
Photovoltaic technician is washing the surface of the panels on the roof of the building to increase efficiency of sun power to store and use the power inside the building below.の素材 [FY310166642306]
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