handwritten text showing energy efficiency business concept writing for electricity ecology written notepad note paper white |
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| navigate by keyword : bar calculate certificate chart composition concept conservation consumption cost debit diagram eco ecological ecology economical economy efficiency efficient electric electrical electricity energy environment graph green heat home idea improvement indicator invoice label led level performance power rate rating regulation save sign symbol technology usage utility watt white |
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| Handwritten text showing Energy Efficiency. Business concept writing for Electricity Ecology Written on notepad paper, white background with space and office view. |
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