造纸板块盘中拉升，青山纸业、恒丰纸业涨停

Group 1 - The paper sector experienced a significant intraday surge, with companies such as Qingshan Paper and Hengfeng Paper hitting the daily limit up [1] - Other companies in the sector, including Songyang Resources, Qifeng New Materials, Annie Co., Huatai Co., and Hengda New Materials, also saw increases in their stock prices [1]