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A man holds an electric light bulb with tree inside and an energy saving rating sign to tell customer the value of the product to make a decision. Energy saving and zero co2 clean energy concept.
Energy efficiency application on laptop. Ecology and energy saving house concept. Home power rating
A Smiling couple Adjusting Thermostat On Home Heating System
Man changing light bulb in lamp at home
Woman hand turning regulate knob, adjusting temperature on gas or water boiler, cropped view. Female choose eco mode on heating system at kitchen or bathroom. Concept of household equipment

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