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Smart rings for monitoring sleep apnea are displayed during the World Smart Industry Expo 2025 in southwest China's Chongqing Municipality, Sept. 7, 2025. The World Smart Industry Expo 2025 kicked off on Friday in southwest China's Chongqing Municipality, showcasing advanced achievements including AI rehabilitation systems, portable wearable devices, elderly care robots, and senior-friendly equipment. (Xinhua/Huang Wei)
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