A股PEEK材料概念震荡走强，兄弟科技涨停，汉宇集团涨近8%，南京聚隆涨逾6%，聚赛龙、同益股份、富恒新材、中研股份等跟涨。

Group 1 - The A-share market for PEEK materials has shown strong fluctuations, with notable increases in stock prices [1] - Brother Technology reached the daily limit increase, while Hanyu Group rose nearly 8% [1] - Nanjing Julong increased by over 6%, with other companies like Jusaolong, Tongyi Co., Fuheng New Materials, and Zhongyan Co. also experiencing gains [1]