化学制药板块震荡走弱，华海药业跌停

Group 1 - The chemical pharmaceutical sector experienced a downturn on September 9, with several companies facing significant declines [1] - Huahai Pharmaceutical hit the daily limit down, indicating a severe drop in stock price [1] - Other companies such as Yifang Bio-U, Chenxin Pharmaceutical, Jiankai Technology, Huana Pharmaceutical, Lifang Pharmaceutical, and Baili Tianheng also saw declines in their stock prices [1]