Investment Rating - The report does not provide a specific investment rating for the companies mentioned, but it highlights potential beneficiaries of Broadcom's Tomahawk 6 launch, indicating a positive outlook for certain players in the AI networking value chain [1][20]. Core Insights - Broadcom's Tomahawk 6 (TH6) switch chip, launched on June 3, 2025, utilizes 3nm technology and supports 200G SerDes, enhancing networking transmission bandwidth and reducing latency. This launch is expected to drive a new technology upgrade cycle in the global AI infrastructure and networking markets, benefiting companies with advanced technologies [1][36]. - The report identifies key players that may benefit from the TH6 upgrade cycle, including Zhongji InnoLight and Suzhou TFC in the optical transceiver market, Shennan Circuits and WUS PCB in PCB/CCL manufacturing, and Unisplendour in AI server/switch manufacturing [1]. - The report discusses the competitive landscape of AI networking, highlighting the shift from Ethernet to NVIDIA's InfiniBand in large-scale AI data centers, while also noting the emergence of Ultra Ethernet specifications aimed at improving communication efficiencies for scaling out AI clusters [2][20]. Summary by Sections AI Networking Overview - The AI networking market is divided into scale-out and scale-up networks, with Ethernet historically leading in traditional data centers but losing ground to InfiniBand in AI infrastructure deployments [2][11]. - The Ultra Ethernet Consortium has developed specifications to enhance Ethernet's capabilities, aiming to regain momentum in the AI networking space [2][13]. Scale-Up Networking Technologies - NVIDIA's NVLink and the newly developed UALink Consortium's Ultra Accelerator Link are key technologies for scale-up networking, enabling high-speed interconnections between GPUs and AI accelerators [3][24]. - Broadcom's Scale-Up Ethernet (SUE) aims to provide low latency and high bandwidth connectivity for XPU scale-up networks, competing with NVIDIA's NVLink [31][34]. Market Dynamics and Trends - The global AI application landscape shows strong growth, with OpenAI's ChatGPT leading in daily active users (DAU), reaching 110 million in early June 2025 [4][74]. - In China, Bytedance's Doubao has surpassed DeepSeek in DAU, indicating a competitive generative AI application market [5][77]. Competitive Landscape - Broadcom's TH6 switch chip offers a switching capacity of 102.4 Tbps, significantly higher than its predecessors, and is designed to support both scale-up and scale-out architectures [36][41]. - Competitors like Cisco and NVIDIA are also advancing their switch technologies, with Cisco's SiliconOne G200 and NVIDIA's Spectrum series providing strong alternatives in the market [41][42]. Future Outlook - The report anticipates a rapid growth in demand for 1.6T optical modules and data center interconnects driven by the adoption of Broadcom's TH6 [38]. - The overall switch market is projected to grow, with cloud service providers expected to account for a significant portion of data center switch sales by 2027 [52][53].