医疗器械板块持续走高，正川股份、康泰医学双双涨停

Group 1 - The medical device sector is experiencing a significant rise, with Zhengchuan Co., Ltd. (603976) and Kangtai Medical (300869) both hitting the daily limit up [1] - Nanwei Medical has increased by over 10%, indicating strong market interest [1] - Other companies such as Lude Medical, Shandong Pharmaceutical Glass (600529), Anjiasi, Jinhao Medical, and Maipu Medical (301033) are also seeing upward movement in their stock prices [1] Group 2 - There is a notable influx of dark pool funds into these stocks, suggesting increased investor confidence and potential for further growth [1]