adult
alternative
ampere
assemble
business
cells
connect
construction
current
ecology
economy
electric
electricity
energy
engineer
environment
equipment
generation
generator
green
grid
industrial
industry
installation
installer
installing
job
ladder
lift
maintenance
male
man
modern
nature
panel
photo
power
process
produce
safety
savings
secure
solar
team
technician
technology
three
voltaic
work
worker
定額
Installing of solar photo voltaic panel system. Three technicians lifting heavy solar module on high platform. Investment in alternative energy, money saving and professional construction concept.の素材 [FY310104466754]
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