中国AI供应链迎来重估？花旗看好：光模块>PCB> AI服务器

Group 1 - The core viewpoint of the report indicates a significant increase in long-term investors' interest in Chinese tech stocks, particularly focusing on the AI supply chain [1] Group 2 - Citi prioritizes investment in the AI supply chain as follows: optical modules (with scale-up opportunities) > PCB sector > ODM manufacturers benefiting from AI server demand growth [2] - The report highlights potential upside for high-speed optical modules by 2027, driven by untapped expansion opportunities [2] - PCB supply tightness is expected to persist into 2026, with aggressive players like Shenghong Technology potentially gaining additional demand from ASICs while maintaining a solid position in the NVIDIA supply chain [2] Group 3 - Investors are particularly interested in Alibaba's data center expansion, which requires a tenfold increase in investment, AI chip supply capabilities, and monetization pathways for AI investments [2] - The report suggests that 7nm equivalent wafer capacity should support domestic AI chip demand in 2026, even if demand doubles compared to 2025 [2] - There is a general consensus among investors that monetization in the ToC sector is challenging, while ToB primarily targets software products for small and medium enterprises [2] - Interest in smart glasses as an investment in AI edge devices is also on the rise [2]