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Assistance technical worker in uniform is checking an operation and efficiency performance of photovoltaic solar panels. Unidentified solar power engineer touches solar panels with his hand at sunset
Team professional electrical engineer safety uniform working together power plant or station refining oil petrochemical using laptop evening. Industrial factory site control energy power station.
Women's hands sort through black soil in the field. A woman farmer checks the quality of the soil. Ecology, agriculture concept.
chemical industry plant - workers in work clothes in a refinery with pipes and machinery
Heat, thermometer shows the temperature is hot in the sky, Summer

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