Neodymium iron boron strong magnetism: Rare earth permanent magnet Neodymium iron boron (NdFeB) is the most powerful permanent magnet among contemporary magnets. It not only has high remanence, high coercivity, high magnetic energy product, high performance-price ratio and other characteristics, but also can be easily processed into various sizes such as large and small heads, rings, counterholes, runways, and other more complex shapes. It can also be added with adhesive on the back of the magnet to fix it in positions such as walls that cannot be adsorbed, such as glass. It has been widely used in 3C electronics, electroacoustics, instrumentation, packaging industry, aerospace, medical industry, and other devices that require permanent magnetic fields, especially suitable for developing high-performance, miniaturized, and lightweight replacement products.