光通信概念震荡走强 理工光科20%涨停

Group 1 - The optical communication sector experienced a strong rebound on December 19, with notable gains in several companies [2] - Rigolight Technology saw a 20% increase, hitting the daily limit, while Tongding Interconnection achieved two consecutive trading days of gains [2] - Other companies in the sector, including Changfei Optical Fiber, Fenghuo Communication, Hengtong Optic-Electric, and Shenglan Co., also reported upward movements [2]