电网设备板块震荡走弱，长城电工跌停

Group 1 - The power grid equipment sector is experiencing a downturn, with significant declines in stock prices [1] - Great Wall Electric (600192) hit the daily limit down, indicating severe market reaction [1] - Xinning Electric (301388) fell over 10%, reflecting broader sector weakness [1] Group 2 - Other companies such as Songsheng Co. (301002), Zhongli Group (002309), Zhiyang Innovation, Keta Power (300153), and Caneng Electric also saw declines [1]