Zheng Quan Shi Bao Wang·2025-08-20 09:00Group 1 - The high-pressure oxygen chamber concept declined by 0.68%, ranking among the top declines in concept sectors as of the market close on August 20 [1] - Within the high-pressure oxygen chamber sector, companies such as Innovate Medical, Yinkang Life, and Aoyang Health experienced significant declines, while Iron Construction Heavy Industry, Samsung Medical, and Dahu Co. saw increases of 4.29%, 1.08%, and 0.89% respectively [1] - The high-pressure oxygen chamber sector experienced a net outflow of 444 million yuan in main funds, with Innovate Medical leading the outflow at 537 million yuan [2] Group 2 - The top gainers in the market included the Tonghuashun Fruit Index at 3.70%, AI mobile phones at 2.77%, and MCU chips at 2.60%, while the high-pressure oxygen chamber concept was among the top decliners [2] - The main funds saw significant outflows from several stocks in the high-pressure oxygen chamber sector, with Innovate Medical, Aoyang Health, and Dahu Co. being the most affected [2] - Conversely, Iron Construction Heavy Industry, Samsung Medical, and Jinling Pharmaceutical attracted net inflows of main funds, indicating a shift in investor interest [2]