雅下工程发力，高压材料技术迎来利好

Group 1 - The energy sector is experiencing significant developments, with the acceleration of virtual power plant construction and the launch of major energy projects, creating favorable growth opportunities for domestic companies [1] - The Yarlung Tsangpo River downstream hydropower project has commenced, with a total investment of approximately 1.2 trillion yuan, planning to build five stepped power stations with a total installed capacity of 60-70 million kilowatts, equivalent to three Three Gorges projects [3] - The project is likely to achieve 100% localization due to high domestic equipment manufacturing rates and security considerations, providing substantial opportunities for domestic cable and related industry chain companies [3] Group 2 - High-altitude power grid areas have stringent requirements for cable materials, necessitating that ultra-high voltage cable materials withstand temperature variations from -40°C to 70°C, strong UV radiation, and low atmospheric pressure, with a lifespan of over 30 years [3] - Domestic companies are accelerating the localization of high-end cable materials, with over 100,000 tons of high-voltage cable insulation materials imported annually, of which foreign companies account for 80% [3] - Wanma Co., Ltd. has achieved stable production of 220kV ultra-clean XLPE insulation materials, with its 500kV cable system materials entering national demonstration projects and achieving stable operational data, breaking the import monopoly [3][4] Group 3 - Wanma Co., Ltd. is one of the few domestic companies capable of supplying 110kV-220kV high-voltage cable materials and has obtained downstream certifications, positioning itself strategically in the localization process [4] - The company has recently added "water conservancy" and "green electricity" labels, indicating its products' suitability for hydropower stations, having previously participated in major projects like the Three Gorges and Nanning pumped storage power station [4] - The Yarlung Tsangpo project, located in a high-altitude area with complex geological conditions, demands high stability from equipment materials, suggesting that domestic companies with technical and performance advantages are likely to secure more orders in major energy projects as localization rates increase [4]