钢铁板块延续强势，柳钢股份7天6板

Group 1 - The steel sector continues to show strong performance, with Liugang Co., Ltd. (601003) achieving six consecutive trading limits in seven days [1] - Xining Special Steel (600117) has recorded three consecutive trading limits, while Jiugang Hongxing (600307) has reached a trading limit [1] - Other companies such as Shengde Xintai (300881) and Fangda Special Steel (600507) are also experiencing upward movement in their stock prices [1] Group 2 - There is a notable influx of dark pool funds into these stocks, indicating increased investor interest and potential for further price movements [1]