Industry Rating - The industry investment rating is maintained as "Outperform" [1] Core Viewpoints - The demand for AI computing power is increasing, leading to a transition from traditional UPS power supply to HVDC due to efficiency, cost, and reliability challenges [2][3] - The global power supply solutions are rapidly evolving towards ±400V and 800V HVDC systems led by tech giants like Microsoft, Google, and Nvidia, aiming to support 1MW power per rack [2] - The market is expected to see gradual volume growth starting in 2026, driven by increasing AI computing power demand and infrastructure investments from major cloud service providers [3] Summary by Sections 1. Why HVDC is Promising? - The technology evolution path is clear, with major players accelerating their layouts in HVDC systems [2] - The industry trend has shifted from concept to large-scale implementation, with significant projects expected to launch in 2026 [2] 2. Market Situation - The demand for IT power in global data centers is expected to rise significantly, with a projected increase from approximately 49GW in 2023 to 96GW by 2026, reflecting a CAGR of around 25% [7] - Major cloud service providers are increasing capital expenditures, providing strong momentum for infrastructure development [3] 3. Investment Recommendations - The HVDC industry is characterized by high concentration and significant barriers to entry, with three main domestic players: Zhongheng Electric, Delta Electronics, and Vertiv [4] - Investment opportunities include: - Domestic leaders expanding overseas: Zhongheng Electric is positioned to leverage its HVDC technology and products in international markets [4] - Companies utilizing ODM strategies to enter overseas markets: Kehua Data and Kstar are focusing on HVDC product development and international expansion [5] - New players in the module sector seeking growth: Tonghe Technology and Youyou Green Energy are developing HVDC product lines and targeting key industry clients [5] 4. HVDC Advantages Over UPS - HVDC systems offer higher safety, stability, and energy efficiency compared to traditional UPS systems, addressing issues related to power consumption, space, and reliability [6][16] - The modular structure of HVDC allows for better utilization rates and reduced redundancy compared to UPS systems [16] 5. Domestic and International Layouts - Domestic HVDC solutions are primarily focused on 240V/336V systems, with significant market share held by Zhongheng Electric, Delta Electronics, and Vertiv [68] - Internationally, major tech companies are pushing for the adoption of ±400V and 800V HVDC systems, with Meta and Nvidia leading the charge [68][72] 6. Future Market Potential - The penetration rate of HVDC in the domestic market is currently low at around 15%, but is expected to rise rapidly due to increasing demand for computing power [72] - The market for 800V HVDC is anticipated to see significant growth starting in 2028, driven by infrastructure projects and technological advancements [72]

Summary of Key Points from the Conference Call Industry Overview - The data center power supply is transitioning from AC UPS architecture to High Voltage Direct Current (HVDC) and Solid State Transformers (SST) to meet increasing computing density demands, improve conversion efficiency, and reduce footprint [1][4] - The domestic UPS market remains dominant, but HVDC solutions are being actively adopted by internet operators [1][4] - The overseas market has a pressing demand for HVDC due to rapid increases in computing density, which significantly enhances overall efficiency by improving conversion rates and saving cabinet space [1][6] Core Insights and Arguments - Domestic enterprises are making rapid progress in SST applications, with pilot projects in the "East Data West Computing" initiative [1][5] - Major companies like Tencent and Alibaba are adopting HVDC combined with direct power supply from the grid, collaborating with firms like Zhongheng and Delta for higher integration [1][5] - The main advantages of transitioning to HVDC include reduced AC conversion stages, improved conversion efficiency, lower operational costs, space savings, and better integration of renewable energy sources [1][11] - The data center DC power market is expected to experience rapid growth from 2026 to 2028, with a compound annual growth rate (CAGR) exceeding 30% [1][12] Current Market Landscape - The current domestic and overseas data center power supply primarily uses AC UPS architecture, which is mature and dominated by companies like Eaton, Huawei, and Kehua [3][13] - The HVDC and SST markets are still in their infancy, with domestic companies like Zhongheng and Zhongda actively engaged in R&D [3][13][14] - The transition to HVDC will drive upgrades in power supply components, such as low-voltage electrical devices evolving into DC circuit breakers [3][16] Key Developments by Major Companies - Nvidia plans to launch an 800V architecture by 2027, which will utilize a large module to convert 10kV AC to 800V DC, enhancing efficiency for high-power data centers [8][10] - Google is adopting a ±400V power supply scheme and plans to transition to SST, while Meta is using a similar architecture in its HBRV4 framework [9][10] - Microsoft has proposed two power supply solutions: a ±400V CLL edge cabinet solution and a future integrated SST solution [10] Future Trends and Opportunities - The shift towards HVDC is expected to disrupt the existing UPS supply chain, allowing domestic companies to gain a foothold in the market [17] - Key components benefiting from HVDC transition include low-voltage electrical devices and relays, which will see upgrades to higher voltage standards [18] - The integration of green electricity and the push for carbon neutrality are driving the adoption of HVDC systems, presenting significant opportunities for domestic enterprises [16][17] Conclusion - The data center power supply market is on the brink of transformation, with HVDC and SST technologies poised to redefine efficiency and operational capabilities. The expected growth in the DC power market and the strategic moves by major tech companies indicate a robust future for this sector, particularly for domestic players who can leverage their R&D advantages [12][17]

Summary of SST Solid-State Transformer Conference Call Industry Overview - The data center power supply architecture is evolving from traditional UPS to HVDC and SST to reduce AC-DC conversion losses and improve energy efficiency [1][2] - SST utilizes high-frequency electronic transformers to replace traditional power frequency transformers, significantly enhancing efficiency and reducing footprint [1] Key Points and Arguments - **Efficiency and Space Reduction**: SST can reduce the footprint by nearly three times compared to traditional UPS for a 2 MW power requirement, with construction cycles shortened from 12 months to approximately one quarter [1][4] - **Cost Structure**: The current cost per watt for SST is around 7-8 RMB, expected to stabilize at 5-6 RMB post-mass production. The main cost components include power devices (40%-50%), high-frequency transformers (25%), and low-voltage DC circuit breakers (10%) [1][6][9] - **Market Dynamics**: The overseas SST market is dominated by joint ventures like Hitachi Energy, ABB, Eaton, and Schneider, while domestic players include China XD Group and TBEA [1][11] - **Future Projections**: By 2030, Schneider anticipates shipping 1,000 SST units in China, with an overall market size expected to reach 10,000 units and a total capacity of approximately 30 GW [1][11] Cost Comparison - **SST vs. Traditional Solutions**: SST costs are approximately 2 to 4 times higher than traditional UPS due to supply chain complexities and labor costs in the U.S. [2][13] - **Domestic vs. Overseas Pricing**: Domestic UPS averages 0.5-0.6 RMB per watt, while joint venture brands are around 1 RMB per watt. HVDC offers a 20%-30% premium over traditional UPS [6][9] Technological Advancements - **Third-Generation SST**: This generation further enhances efficiency through the use of silicon carbide and gallium nitride power devices, reducing energy loss and fault rates [3][10] - **Technical Barriers**: Key barriers include rectification processes, electromagnetic compatibility, thermal management, and supply chain management for high-frequency transformers and semiconductor devices [17][18] Market Entry Strategies - **Domestic Firms in North America**: To penetrate the North American market, domestic firms should consider entering through low-voltage distribution products, as seen with Jinpan and Igor's progress in distribution transformers [19] - **Partnerships and Collaborations**: Companies like Schneider and Eaton are actively seeking partnerships to enhance their technology offerings, particularly in liquid cooling and HVDC [21][22] Demand and Supply Insights - **Major Demand Players**: Companies like Microsoft and Meta show significant interest in SST technology, while Google prefers traditional HVDC architectures [23] - **Supply Chain Dynamics**: The supply chain is characterized by a mix of domestic and joint venture companies, with a focus on integrating new technologies into existing frameworks [11][12] Conclusion - The SST industry is poised for growth, with expectations of reaching G-Watt scale by 2026-2027, driven by increasing interest from major tech companies and advancements in technology [23]

Summary of Key Points from Conference Call Industry Overview - The conference call focuses on the centralized computing power market, specifically the comparison between HVDC (High Voltage Direct Current) and UPS (Uninterruptible Power Supply) systems, highlighting the advantages of HVDC in terms of reliability, efficiency, and space utilization [1][3][5]. Core Insights and Arguments - **Market Adoption**: Domestic CSP (Cloud Service Providers) like Alibaba and Tencent have widely adopted HVDC systems, while overseas market penetration remains in its early stages [1][5]. - **SST Development**: Solid State Transformers (SST) are viewed as an upgrade to HVDC, primarily driven by advancements in power electronics technology. Although SST won't see mass application in the short term, it represents a potential upgrade path for integrated systems [1][6]. - **Investment Potential**: The UPS and HVDC sectors have shown strong performance recently, with stock prices rising approximately 30%. North American HVDC penetration is expected to surge from 3-5% to over 50% by the second half of 2026, indicating significant investment opportunities [1][7]. - **Overseas Market Dynamics**: The overseas UPS market has experienced positive price and profit changes due to stable market conditions and shifts in supply-demand dynamics. Chinese companies like Kehua Data and Shenghong are actively entering this market, laying the groundwork for future HVDC business [1][9]. Company-Specific Insights - **Kehua Data**: The company has a strong presence in the data center sector, boasting leading technologies in UPS, HVDC, and liquid cooling systems. It holds a significant market share in Tencent's systems, with liquid cooling technology already implemented in the U.S. market. ITC orders have seen rapid growth, with a potential performance inflection point expected in Q3 [1][10]. - **Chinese Companies in the U.S.**: Companies like Shenghong and Kehua Data are making notable strides in the U.S. data center power quality sector, enhancing their profitability and establishing a foundation for future HVDC market entry [1][11]. Additional Important Insights - **Market Trends**: The power conversion sector is witnessing a significant increase in power density, with expectations of cabinet power density rising from 130-140 kW to 600-650 kW by 2027, presenting both challenges and opportunities [2]. - **UPS Shortage Impact**: The current shortage of UPS systems provides Chinese companies with opportunities to participate in North American tenders and meet overseas OEM demands, significantly enhancing their profitability [1][19]. - **Future Demand for HVDC**: Companies with UPS experience are more likely to transition to HVDC, indicating a strong future demand for those already established in the UPS market [1][20]. - **Taiwanese Companies' Progress**: Taiwanese firms like Delta and Lite-On have launched advanced HVDC solutions, showcasing their rapid development in the field [1][23]. Conclusion - The HVDC and UPS markets are poised for significant growth, driven by technological advancements and increasing demand in North America. Companies that adapt to these trends and leverage their existing market positions are likely to see substantial benefits in the coming years [1][7][20].

Summary of AIDC HVDC Expert Exchange Call Industry Overview - The discussion centers around the **HVDC (High Voltage Direct Current)** power supply systems and their advantages over traditional **UPS (Uninterruptible Power Supply)** systems in data centers, particularly as data centers evolve towards high-performance GPU and ASIC servers [1][2][4]. Key Points and Arguments 1. **Efficiency Comparison**: Traditional UPS systems incur energy losses due to AC-DC-AC conversion, while HVDC systems only require AC-DC conversion, leading to approximately a 1% efficiency improvement, especially in high-power applications [1][2][5]. 2. **Power Demand Increase**: By 2025, GPU and ASIC servers are expected to exceed 100 kW per cabinet, making traditional UPS and low-voltage HVDC inadequate. This necessitates an increase in power system voltage to meet output power demands [1][4]. 3. **Cost Implications**: The cost of adopting HVDC systems is projected to be 30%-50% higher than existing UPS systems for ±400V HVDC, and 20%-30% higher for 800V HVDC systems [3][16]. 4. **Operational Cost Savings**: A 1% increase in power supply efficiency is crucial for large data centers, as electricity costs are the primary operational expense over a 10-15 year lifecycle. Improved efficiency also reduces cooling energy consumption, enhancing overall data center performance metrics like PUE (Power Usage Effectiveness) [5][6]. 5. **PUE Definition**: PUE is a key metric for data center efficiency, with values closer to 1 indicating better efficiency. A typical good PUE value is around 1.2, meaning 20% additional energy is used for cooling and power supply systems [6]. Future Developments 1. **Upcoming HVDC Systems**: NVIDIA plans to release an 800V VDC system in May 2025, with other major companies like Meta, Google, and Microsoft defining ±400V HVDC systems expected to ship in Q1 2026 [1][7]. 2. **Transition to HVDC**: CSPs (Cloud Service Providers) are expected to gradually transition to ±400V HVDC systems for their server and HGX screen purchases post-2026 [7][10]. 3. **Mixed Power Supply Systems**: Data centers operated by Meta, Google, and Microsoft will utilize a hybrid approach, incorporating both ±400V HVDC and traditional power cabinets [10]. Technical Insights 1. **System Architecture Differences**: ±400V HVDC operates on a three-wire system compatible with existing 400V PSU, while 800V HVDC uses a two-wire system requiring updated PSU support [3][11]. 2. **Power Supply Unit (PSU) Requirements**: The PSU power requirements for ±400V systems will be 12 kW or 18 kW, depending on the server capacity, with older 5.5 kW units becoming obsolete [12]. 3. **Core Components of HVDC Systems**: Key electrical components include power devices (MOSFETs, diodes), magnetic devices (capacitors, inductors), and control devices, with the highest costs associated with power and distribution devices [20]. Market Dynamics 1. **Supplier Landscape**: Major suppliers for HVDC systems include Eaton, Schneider, and Vertiv, with potential for Delta to join. These companies are primarily involved in manufacturing UPS and PSU equipment [19]. 2. **Domestic Participation**: Chinese companies currently play a role in the supply chain but mainly as OEMs, with limited involvement in system-level development. Future opportunities for collaboration in module development may arise [23]. Challenges and Opportunities 1. **Transition Challenges for UPS Manufacturers**: Established UPS manufacturers like Vertiv and Schneider face challenges in transitioning to HVDC due to differences in application and design, despite having relevant technical expertise [26]. 2. **PSU Manufacturers' Position**: Domestic PSU manufacturers are well-positioned to transition to HVDC, but face challenges in market entry, particularly in North America, due to the need for familiarity with local user requirements [27]. Conclusion The shift towards HVDC systems in data centers is driven by the need for higher efficiency and power capacity to support advanced computing technologies. The transition presents both challenges and opportunities for existing power supply manufacturers and new entrants in the market.

Group 1 - The 12th World Games will open in Chengdu on August 7, with 27 competition venues ready, emphasizing frugality in every detail [1] - All 27 competition venues are either renovated or temporary constructions, utilizing green and recyclable materials, and adopting modular and standardized construction methods [1] - The event features 34 major events, 60 sub-events, and 256 minor events, including traditional sports with cultural significance and new vibrant sports [1] Group 2 - Chengdu Sports Academy will host competitions in four major events, showcasing a commitment to green and low-carbon principles [2] - The venue employs a rental model for large equipment, significantly reducing capital investment and carbon emissions from material production and transportation [2] - Facilities are designed for flexible use post-event, with foldable and easily convertible equipment to enhance venue efficiency [2] Group 3 - Sichuan Provincial Gymnasium will host Muay Thai and freestyle fighting, utilizing temporary facilities from a previous event to minimize new construction [3] - The use of existing temporary facilities covers nearly 500 square meters, contributing to cost-saving measures for the event [3]

Investment Rating - The report maintains a "Buy" rating for Kstar and Envicool, while Kehua is rated as "Neutral" [2][11]. Core Insights - The data center supply chain in China is experiencing strong demand, with expectations for continued capacity expansion through 2025 and potentially into 2026, despite challenges such as overseas chip supply constraints [1][5]. - The report has revised earnings per share (EPS) estimates downward by 17%-31% for Kstar, Envicool, and Kehua, primarily due to uncertainties in domestic solar inverter and energy storage system (ESS) demand, as well as intense pricing competition [1][7]. - Kstar is favored over Kehua due to its faster long-term growth potential, better margin profile, and more attractive valuation metrics [2][5]. Kstar Summary - Kstar's sales and net income for 4Q24 decreased by 9% and 76% year-over-year, respectively, while 1Q25 showed a 14% increase in sales but a 17% decrease in net income [5][8]. - The company anticipates 30%-50% year-over-year order growth from domestic internet and telecom customers in 2025, with significant opportunities for customer base expansion [6][9]. - Kstar's total revenue is projected to grow from Rmb 4.159 billion in 2024 to Rmb 9.642 billion by 2030, with a net income increase from Rmb 394 million to Rmb 1.455 billion over the same period [10]. Envicool Summary - Envicool's 4Q24 and 1Q25 results missed expectations due to delayed revenue recognition and increased operating expenses, leading to a 31% downward revision in EPS estimates [11][15]. - The data center room cooling segment saw sales growth of 49% in 2024, with a record high order backlog by 1Q25, indicating strong demand [13][14]. - Envicool's total revenue is expected to rise from Rmb 3.529 billion in 2024 to Rmb 4.589 billion in 2025, with net profit projected to increase from Rmb 344 million to Rmb 453 million [16].

- ■■- 核心摘要 2022年12月ChatGPT发布，引发全球市场对于AI发展的关注。伴随美国头部云厂商不断提升资本开 支，AI基建领域产生众多投资机会。涉及产品包括变压器、UPS（不间断电源）、服务器电源、液 冷；甚至由于AIDC（AI数据中心）建设的火爆，导致电网接入点稀缺，核电成为AIDC的优质电 源，包括核电公司以及可控核聚变公司均受到关注。 我们复盘ChatGPT发布后，海外AIDC基建类产业链股价走势，可以发现各区间段收益率靠前的细分 赛道，基本对应当时AI产业演进中的核心矛盾或进展。从规律来看，大致可以分为四个阶段：1） ChatGPT出现带来算力需求高增，期间服务器电源关注度攀升；2）算力高增推动芯片技术迭代，相 应导致功耗提升，服务器电源、液冷需求提升；3）AIDC进入实际建设阶段，AI基建（备用电源、 变压器需求增加）；4）AIDC建设导致电网接入点难寻，燃气轮机、核电相应概念热度提升。 综合以上分析，对于中国AIDC各细分产业链，我们观点如下： 传统备用电源有望享受量价齐升红利。 海外头部企业整体指引2025年营业利润率有望提升。我们认 为主要原因有（1）需求量端，AI数据中心建设浪 ...