Xinda Securities·2025-12-05 07:20Investment Rating - The industry investment rating is "Positive" [2] Core Insights - The report highlights that on November 25, Alibaba Group reported a strong revenue growth of 34% year-on-year for its cloud services, driven by robust AI demand, with AI-related product revenue achieving triple-digit year-on-year growth for nine consecutive quarters. Over the past four quarters, Alibaba's capital expenditure in AI and cloud infrastructure reached approximately 120 billion yuan [3] - Major domestic companies, including Baidu, Tencent, and Alibaba, have significantly increased their capital expenditures in AI, totaling around 81.7 billion yuan in the first half of 2025. Alibaba's capital expenditure alone reached 120 billion yuan over the last four quarters, with potential for further increases based on demand [3] - The report emphasizes the importance of power supply and cooling solutions as key components of the AIDC (AI Data Center) upgrade, with a clear technological replacement path. The transition from traditional uninterruptible power supplies (UPS) to high-voltage direct current (HVDC) and solid-state transformers (SST) is highlighted, along with the adoption of liquid cooling solutions [3] Summary by Sections Capital Expenditure Trends - Domestic tech giants are accelerating their capital expenditures in AI, with expectations for further strengthening in 2026. The report notes that Tencent's sales and marketing expenses related to AI increased by 22% year-on-year to 11.5 billion yuan in the third quarter, primarily to support AI-native applications and game development [3] Investment Recommendations - The report suggests focusing on companies involved in power supply, such as Oulutong, Kehua Data, Zhongheng Electric, Hewei Electric, and Sunshine Power. For liquid cooling solutions, companies like Invec and Shenling Environment are recommended. Additionally, standby generator manufacturers such as KOTAI Power and Weichai Heavy Machinery are highlighted [4]