Western Securities·2026-01-18 05:45Investment Rating - The industry investment rating is "Overweight" and has been maintained from the previous rating [9]. Core Insights - Liquid cooling technology is expected to become the mainstream cooling solution for AIDC due to the increasing demand for AI computing power and the rising power density of server cabinets, which traditional air cooling cannot meet [6][24]. - The global data center liquid cooling component market is projected to reach $15.7 billion by 2027, with a CAGR of 35% from 2025 to 2027 [7][37]. - Automotive parts suppliers are expected to become upstream component suppliers for liquid cooling systems, with several companies having Tier 1 supply capabilities [8]. Summary by Sections AIDC Liquid Cooling Industry Chain and Core Components - The current mainstream solution is cold plate liquid cooling, while immersion liquid cooling offers better efficiency but is limited by high coolant costs [7][29]. - Key components for upgrading include CDU, liquid cooling plates, manifolds, and UQDs, which have a higher value proportion [7][8]. Investment Opportunities for Automotive Parts Suppliers - Automotive parts companies can leverage existing customer bases and strong business capabilities to collaborate with Taiwanese and local manufacturers in the liquid cooling supply chain [8]. - Recommended companies include Yinlun, Minth Group, Feilong, Meilixin, Chuanhuan Technology, Zhongding, Xiangxin Technology, Sulian Technology, and Pengling [8]. Liquid Cooling Technology as the Mainstream Cooling Solution - The average power density of server cabinets is expected to exceed 25 kW by 2025, making traditional air cooling inadequate [24]. - Liquid cooling can achieve a PUE of less than 1.25, aligning with policy directives for energy efficiency [6][19]. Market Size and Growth Projections - The global data center market is projected to reach $128.9 billion by 2025, with a CAGR of 13% from 2019 to 2025 [13]. - The penetration rate of liquid cooling systems in data centers is expected to grow to 30% by 2027 [41]. Key Components and Their Evolution - The evolution of liquid cooling components, particularly the liquid cooling plates and UQDs, is driven by the increasing power requirements of GPUs, with significant upgrades expected in the next generation of GPUs [46][48]. - The design of CDU is also evolving to enhance heat exchange efficiency and prevent leaks, which are critical for the industry's advancement [61][66].