光通信模块板块领跌，下跌2.56%

Group 1 - The optical communication module sector experienced a decline of 2.56% [1] - Among the companies, Hangdian Co., Ltd. saw a drop of 5.97% [1] - Guangku Technology and Tengjing Technology fell by 5.56% and 5.53% respectively [1] Group 2 - Changfei Optical Fiber, Zhongji Xuchuang, and Cambridge Technology all reported declines exceeding 4% [1]