Investment Rating - The report maintains a recommendation for the superconducting magnet segment in the controllable nuclear fusion industry, highlighting it as the segment with the highest value contribution [2][10]. Core Insights - Superconducting magnets are critical components of the Tokamak device, essential for confining plasma at temperatures exceeding one hundred million degrees Celsius [6][15]. - The report emphasizes that controllable nuclear fusion is entering a capital expenditure expansion phase from 2025 to 2028, with significant market opportunities arising for high-temperature superconducting materials [9][10]. - The market for second-generation high-temperature superconducting materials is projected to grow at a compound annual growth rate (CAGR) of 59.3% from 2024 to 2030, reaching a market size of 4.9 billion yuan per year by 2030 [9][10]. Summary by Sections Superconducting Magnets: The Highest Value Segment in Controllable Nuclear Fusion - Superconducting magnets are the core components of Tokamak devices, crucial for maintaining high-temperature plasma confinement [6][15]. - The value contribution of low-temperature and high-temperature superconducting magnets is approximately 30% and 40%, respectively [6][28]. - Low-temperature superconducting technology is relatively mature, while high-temperature superconducting materials offer superior performance and are expected to be used in future Tokamak reactors [6][51]. Low-Temperature Superconducting Materials: Mature Technology and Complete Supply Chain - The low-temperature superconducting route has reached a relatively mature stage, with stable mass production capabilities [6][44]. - The supply chain is well-established, with core processing in the midstream and broad application potential downstream [6][44]. High-Temperature Superconducting Materials: Significant Opportunities from Nuclear Fusion - High-temperature superconducting materials can significantly reduce device size and are expected to become the core development direction for next-generation nuclear fusion devices [6][45]. - The midstream manufacturing of high-temperature superconducting materials is a critical segment, with controllable nuclear fusion being the largest application area [6][45]. Key Companies in the Industry - Shanghai Superconductor is a leading company in high-temperature superconducting materials, expected to play a central role in the commercialization of controllable nuclear fusion [10][10]. - Yongding Co., Ltd. is the controlling shareholder of East Superconductor, which has established close cooperation with multiple fusion reactors [10][10]. - Lianchuang Optoelectronics is positioned in the high-temperature superconducting magnet segment, maintaining stable traditional operations while exploring future growth in nuclear fusion and laser technologies [10][10]. - Xibu Superconductor is recognized as a domestic leader in low-temperature superconductors [10][10]. - Jingda Co., Ltd. is the largest shareholder of Shanghai Superconductor, strategically entering the high-temperature superconducting market [10][10].