Group 1 - The medical device sector experienced fluctuations and adjustments on January 28, with companies such as Zhijiang Bio, Wanfu Bio, Dean Diagnostics, Shengxiang Bio, and Sanyou Medical seeing declines of over 5% [1] - The medical device ETF (562600) fell by 2.18% [1] - The current position of the medical device index is near the previous transition point between bear and bull markets, indicating that prices are still relatively low, suggesting a potential opportunity for investors to buy on dips [1]