Group 1 - The PEEK materials concept increased by 4.11%, ranking second among concept sectors, with 32 stocks rising, including Xinhan New Materials which hit a 20% limit up [1][2] - Major gainers in the PEEK materials sector included Zhongxin Fluorine Materials, Fuchun Dyeing and Weaving, with respective increases of 12.41%, 9.71%, and 8.44% [1][2] - The sector saw a net inflow of 494 million yuan from main funds, with 20 stocks receiving net inflows, and 14 stocks exceeding 10 million yuan in net inflow [2][3] Group 2 - Zhongxin Fluorine Materials led the net inflow with 281 million yuan, followed by Xinhan New Materials and Jintian Co., with net inflows of 142 million yuan and 41.34 million yuan respectively [2][3] - The top three stocks by net inflow ratio were Zhongxin Fluorine Materials at 25.29%, Fuchun Dyeing and Weaving at 12.94%, and Hailide at 11.30% [3][4] - The trading volume and turnover rates for key stocks in the PEEK materials sector were significant, with Xinhan New Materials showing a turnover rate of 34.85% [3][4]