Buyers explore summer cooling products at a shop in Yiwu, East China's Zhejiang Province, on July 2, 2026. Amid the persistent heatwave in Europe, sales of "heat-relief gadgets" are booming. Products such as solar-powered fan hats, waist-mounted fans, AI-enabled desk fans, and portable air conditioners are highly popular among overseas buyers and are being exported to markets including Europe. Photo: VCG