Basalt fiber is an inorganic, high-performance material manufactured by melting natural basalt rock at high temperatures and drawing it into high-speed filaments. It combines a balanced blend of mechanical, thermal, and chemical attributes with a strong cost-performance advantage over exotic alternatives. Featuring high mechanical strength, an exceptional continuous operating temperature up to 500°C to 600°C, and outstanding resistance to acids, alkalis, salt spray, and moisture, basalt fiber acts as a cost-effective substitute for high-priced, high-performance specialty fibers while also exhibiting a high sound absorption coefficient and excellent electrical insulation. These unique physical and chemical properties grant it an irreplaceable role across diverse application fields—including civil engineering infrastructure like bridges and tunnels, automotive and rail transportation components, aerospace and defense structures such as radar domes, industrial anti-corrosion and new energy systems like wind turbine blades and EV charging housings, and safety protection products including fire blankets and high-temperature filtration bags.