Investment Rating - The report maintains an investment rating of "Outperform" for the AIDC industry, consistent with the previous rating [3]. Core Insights - Major domestic and international manufacturers are making significant capital expenditures in the AIDC sector, indicating substantial growth potential in the infrastructure industry [4]. - The AIDC infrastructure can be categorized into internal and external components, with overseas value being higher compared to domestic counterparts [5]. - The AIDC sector is experiencing exponential growth in computing power and a significant increase in power consumption compared to traditional IDC [6]. - The report highlights the increasing capital expenditures by major players such as ByteDance, Tencent, and Alibaba in China, as well as the four major US tech giants (Microsoft, Meta, Google, and Amazon) [19][22]. Summary by Sections AIDC Infrastructure Composition - AIDC is designed specifically to support and accelerate AI applications, featuring high-performance computing resources and large-scale storage solutions [11]. - The key differences between AIDC and traditional IDC include a significant increase in power density and computing power, with AIDC cabinets typically ranging from 20-100 kW [15]. Internal AIDC Components - High-power AI servers create investment opportunities in power supply, liquid cooling, supercapacitors, and BBU [25]. - The global market for AI server power supplies is expected to exceed $5 billion by 2026, driven by increased power density and efficiency [6][40]. - Supercapacitors are gaining importance in AIDC for their dual functions of peak shaving and backup power, with a projected market increase due to their integration into NVIDIA's GB300 [55][56]. - Liquid cooling technologies are becoming essential as cabinet power densities exceed 20 kW, with various liquid cooling methods emerging to meet high thermal demands [63]. External AIDC Components - The demand for UPS, HVDC, diesel generators, transformers, and switchgear is expected to grow significantly due to AIDC requirements [8]. - The UPS market is projected to reach 19.1 billion yuan by 2025, with leading companies like Kehua and Huawei holding significant market shares [9]. - The diesel generator market for AIDC is anticipated to reach 238 billion yuan, indicating a vast market potential for domestic manufacturers [9]. Major Players and Investment Plans - ByteDance plans to increase its capital expenditure to 160 billion yuan by 2025, focusing on AI computing procurement and data center construction [20]. - Tencent's capital expenditure is projected to reach 230 billion yuan in 2024, reflecting a 176% year-on-year increase [19]. - Alibaba aims to invest over 380 billion yuan in cloud and AI hardware infrastructure over the next three years, significantly increasing its previous decade's total investment [20]. - Major US tech companies are also ramping up their investments in AI data centers, with total investments expected to reach $218 billion by the end of 2024 [22][23].