According to Jin10, Hong Kong optical communication stocks strengthened, with Comba Telecom Systems Holdings ([02342.HK](http://02342.HK)) rising more than 7%, Cambridge Technology ([06166.HK](http://06166.HK)) rising more than 3%, and Haiguang Xinzheng ([01191.HK](http://01191.HK)) and Yangtze Optical Fibre and Cable ([06869.HK](http://06869.HK)) also advancing.