[Hong Kong Stocks Close: Zhipu (02513.HK) Up Over 7%] According to DeepTech TechFlow, on August 4th, Hong Kong stocks closed with the Hang Seng Index down 0.6% and the Tech Index up 0.21%. Optical communication, pharmaceutical outsourcing concepts, and PCB concepts performed strongly throughout the day. WuXi AppTec (02359.HK) rose about 11%, Zhipu (02513.HK) rose over 7%, and SMIC (00981.HK) rose about 5%. (Jin10)