Investment Rating - The report maintains an "Outperform" rating for the communication industry, indicating an expected performance exceeding the benchmark index by over 10% [1]. Core Insights - Broadcom has launched the first 800G AI Ethernet network interface card, Thor Ultra, which supports advanced AI networking features and is expected to enhance the open Ethernet ecosystem [4][17]. - The introduction of Broadcom's 102.4T CPO switch, TH6-Davisson, is anticipated to mark 2026 as the year of large-scale CPO deployment, significantly impacting the optical engine and related components market [5][18]. - The ESUN Ethernet for Scaleup Networking alliance, featuring major tech companies, aims to challenge proprietary protocols in the high-speed interconnect market, potentially expanding the Ethernet switch chip market significantly [6][19][20]. Summary by Sections Industry Trends - Broadcom's Thor Ultra card supports both 200G and 100G modulation modes, facilitating large-scale AI cluster networking [4][17]. - The TH6-Davisson switch enhances link stability and energy efficiency, with a 70% reduction in optical interconnect power consumption compared to pluggable optical modules [5][18]. - The ESUN alliance's establishment during the OCP summit indicates a shift towards unified open protocol standards in the AI scale-up market [6][19]. Investment Recommendations - Companies to watch include: - Optical Modules: Zhongji Xuchuang, Xinyi Sheng, Tianfu Communication, Cambridge Technology, Seagate Technology, Jiayuan Technology, Huagong Technology [11][21]. - CPO: Tianfu Communication, Yuanjie Technology, Guangku Technology, Taicheng Technology, Zhishang Technology, Ruijie Networks [11][21]. - Ethernet Switch Chips: Shengke Communication, ZTE Corporation, Canxin Technology [11][21]. - Domestic Supernode Servers: Huafeng Technology, Yihua Co., ZTE Corporation, Unisplendour, Inspur Information, Luxshare Precision [11][21]. Market Performance - The overall market experienced a decline from October 13 to October 17, 2025, with the Shanghai Composite Index falling by 1.47% and the Shenzhen Component Index dropping by 4.99% [11][21]. - The cloud computing sector showed resilience with a weekly increase of 1.83% [11][21].