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As temperatures soar above 40 degrees Celsius, sanitation workers in Nanjing City, east China's Jiangsu Province, are testing "air-conditioned vests" designed to make outdoor work more comfortable. Equipped with two quiet cooling fans and powered by a portable battery pack, the vests circulate air to speed up sweat evaporation, helping reduce heat stress during long hours in the summer sun.
As temperatures soar above 40 degrees Celsius, sanitation workers in Nanjing City, east China's Jiangsu Province, are testing "air-conditioned vests" designed to make outdoor work more comfortable. Equipped with two quiet cooling fans and powered by a portable battery pack, the vests circulate air to speed up sweat evaporation, helping reduce heat stress during long hours in the summer sun.