[A-share Optical Communication Concept Stocks Continue to Rise, Changyingtong and Changxinbochuang Up Over 10%] According to Deep Tide TechFlow, on August 27, A-share optical communication concept stocks continued to rise, with Changyingtong and Changxinbochuang up over 10%, and Yangtze Optical Fibre and Hangzhou Electric Shares hitting the daily limit. (Jin10)