circular ring neodymium-iron-boron magnets

Neodymium-iron-boron magnets are known as rare-earth strong magnets,and shorted as NdFeB magnets or neodymium magnets.Because of the excellent mechanical properties, neodymium-iron-boron material can be processed into various shapes.Circular ring neodymium-iron-boron magnets are widely used in modern industry like as rectangular neodymium magnet an circular disc neodymium magnets