Group 1 - The fluorochemical index increased by 1.98% during the trading session [1] - Among the constituent stocks, Duofu Duo reached the daily limit, while Jingrui Electric Materials rose by 7.20%, Shenzhen New Star increased by 6.00%, Yongtai Technology went up by 3.11%, and Haohua Technology climbed by 2.81% [1]