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People visit a model of the manned submersible Shenhai Yongshi (Deep Sea Warrior) at an exhibition of the Marintec China 2025 at Shanghai New International Expo Center in Shanghai, east China, Dec. 2, 2025. Attracting over 2,200 enterprises from 16 countries and regions, the event kicked off here on Tuesday and will last until Dec. 5, 2025. (Xinhua/Zhang Jiansong)
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