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Energy efficiency class A, A+, A++, A+++, B, C, D ,E , F, G diagram isolated on white background Stock Photo - Alamy
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3D energy efficiency chart - power/ electricity saving concept - A+++, A++, A+, A, B, C, D, E, F, G Stock Photo - Alamy
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3D Energy Efficiency Chart - Power/ Electricity Saving Concept - a+++, a++, a+, a, B, C, D, E, F, G Stock Illustration - Illustration of chart, efficiency: 161174155
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