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writing showing energy efficiency made in the office with surroundings laptop marker pen. business concept for building technology
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dreamstime
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buy for Personal Use & Commercial
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alternative
architecture
blackboard
building
certified
classification
climate
conservation
construction
consumption
cooling
costs
drawing
eco
ecological
economy
effectiveness
efficiency
efficient
electricity
energy
environment
finance
green
heat
home
house
household
housing
improve
improvement
management
measure
passive
power
rating
real
reduce
reduction
renewable
resources
technology
warming