Investment Rating - The report maintains a positive outlook on the controllable nuclear fusion industry, particularly during the "14th Five-Year Plan" period, suggesting a focus on the expansion of capital expenditures and the associated opportunities in the power supply systems for FRC and Z-pinch devices [2]. Core Insights - The power supply is deemed the "lifeline" of controllable nuclear fusion devices, with a significant value contribution. The report highlights that the power supply systems for nuclear fusion devices require high capacity (around 100MW), high voltage (up to 1MV), and high current (up to 100kA), with low ripple (1%-2%), indicating a higher complexity compared to traditional industrial power supplies [4][18]. - The report emphasizes the expected release of multiple orders due to the expansion of capital expenditures in the controllable nuclear fusion sector, driven by the construction of Tokamak and Z-pinch devices, as well as the commercial development of FRC devices [4][21]. Summary by Sections Section 1: Power Supply as the Lifeline of Controllable Nuclear Fusion Devices - The report categorizes nuclear fusion technology into magnetic confinement, inertial confinement, and magneto-inertial confinement, with Tokamak being the mainstream approach [12][14]. - The power supply system is identified as a core component of nuclear fusion devices, with a high value contribution, particularly in Tokamak systems where the power supply accounts for approximately 15% of the total value [18][23]. Section 2: Tokamak Requires Long Pulse Operation, Core is Pulse Power Supply - The Tokamak pulse power supply consists of magnet power supply, auxiliary heating power supply, and reactive power compensation systems, which are critical for plasma formation and maintenance [27]. - The report details the technical requirements for the magnet power supply, including high current, low ripple, and fast response times, indicating significant technical barriers [30][37]. Section 3: High Value Contribution of FRC and Z-Pinch Power Supply, Focus on Core Components - The FRC device is noted for its simplicity and lower costs, with expectations for early commercialization, while the Z-pinch approach has a high value contribution from its driver components [4][21]. - The report highlights the importance of fast control switches and pulse capacitors in the power supply for both FRC and Z-pinch devices, indicating a growing market opportunity [4][21]. Section 4: Investment Recommendations - Specific companies are highlighted for their potential in the nuclear fusion power supply market, including Xuguang Electronics, Wangzi New Materials, Guoli Co., and others, which are positioned to benefit from the expanding demand in this sector [4][22].