海外景气度专题：AIDC催化产业持续高景气，国内燃机、部件龙头空间打开

Investment Rating - The industry investment rating is "Positive" [1] Core Viewpoints - The report highlights that the global gas turbine demand is expected to reach 55.5 GW in 2024, representing a year-on-year growth of 38%, driven by the increasing demand from AI data centers [3][15] - The report emphasizes three perspectives to explore the industry's demand dynamics: AI demand perspective, gas turbine leaders' perspective, and gas turbine component leaders' perspective [3][18] - The report identifies significant opportunities for domestic players in the gas turbine supply chain due to the insufficient capacity elasticity in overseas markets [5][77] Summary by Sections 1. Industry Research Framework - The report constructs a framework to track the demand dynamics of gas turbine blades based on three perspectives: AI demand, gas turbine leaders, and gas turbine component leaders [3][18] 2. AI Demand Perspective - Global capital expenditure is accelerating, with North America's four major cloud service providers (CSPs) expected to spend $155.5 billion in the first half of 2025, a 73% year-on-year increase [6][23] - In China, the combined capital expenditure of BAT (Baidu, Alibaba, Tencent) is projected to reach $26.5 billion in 2024, marking a 105% year-on-year growth [28] 3. Global Gas Turbine Leaders Perspective - The global gas turbine market is estimated to be worth $28.14 billion in 2024, with major players like GE, Siemens, and Mitsubishi dominating the market [36] - The report notes that GE's gas turbine orders are expected to grow by 113% in 2024, with backlogs extending to 2028 [40] 4. Gas Turbine Component Leaders Perspective - The report indicates that the profitability of gas turbine components is set to increase significantly, with the core component, blades, accounting for approximately 35% of the gas turbine's cost [4][61] - The report highlights that the two major players in the component market, Howmet and PCC, face limited capacity expansion despite rising demand [67][70] 5. Investment Recommendations - The report recommends key stocks such as Yingliu Co., Haomai Technology, and Jerry Holdings, while also suggesting to pay attention to companies like Linde Co., Hangya Technology, and Dongfang Electric [5][77]