Core Insights - The SAMPE China 2025 Conference and the 20th International Advanced Composite Materials Exhibition took place in Beijing, where Hunan Zerui New Materials Co., Ltd. unveiled two high-crystallinity silicon carbide fibers, Zeralon®3A and Zelramic®300, capable of withstanding temperatures over 1800°C [1][4]. Company Overview - Hunan Zerui New Materials is the only national high-tech enterprise in China that has achieved the industrialization of silicon carbide fibers through a doping route, establishing the first continuous production line for doped silicon carbide fibers with a capacity of 20 tons per year, which is 40 times more efficient than traditional batch processes [4][7]. - The company has filed nearly 40 patents, demonstrating its commitment to developing a full range of high-temperature, low-cost doped silicon carbide fiber technologies [7]. Product Features - Zeralon®3A and Zelramic®300 are classified as third-generation silicon carbide fibers, characterized by stable crystal structures that do not grow rapidly at high temperatures, ensuring the stability of composite materials during preparation [5]. - The fibers exhibit over 80% strength retention at 1800°C, making them suitable for extreme environments, particularly in aerospace applications such as new aircraft engines and hypersonic vehicle thermal protection systems [4][5]. Industry Impact - The introduction of these fibers is considered a significant breakthrough in China's silicon carbide fiber sector, with potential applications in aerospace, nuclear power, semiconductor, and photovoltaic thermal field materials [4]. - The air oxidation crosslinking technology used by the company offers a scalable production solution, addressing the high cost issues associated with ceramic matrix composites [4].