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Professional design engineers discuss calculations to use pure natural energy and installing solar panels and wind turbines on the roof of houses to generate electricity, energy saving and global warming ideas.
Keywords:
engineer
men
business person
blueprint
adult
architecture
office
working
building contractor
construction industry
business
professional occupation
indoors
plan
businessman
industry
design professional
discussion
planning
males
hardhat
expertise
design
teamwork
technology
occupation
architect
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