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Energy efficiency concept. Hand hold white smartphone with digital hologram energy efficiency sign on city dark blurred background
Keywords:
performance
concepts
electricity
no people
efficiency
fuel and power generation
power supply
panoramic
symbol
economy
icon
chart
wireless technology
certificate
environmental conservation
finance and economy
internet
alternative energy
low
social issues
order
energy efficient
equipment
environment
business finance and industry
design
technology
level
modern
smart phone
mobile phone
electrical equipment
rating
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