... force. It is widely used in our daily life. NdFeB magnet is made from Neodymium, Iron, Boron and some other ... to make it strong.1. General features of the NdFeB magnet:NdFeB Magnet Grades: N33, N35, N38, N40, N42, N48, N50, ... , annunciators, linear actuators, microphone assembliesMagnetic separators, automatic mahjong machines Toys and other industries and etc.Warmly welcome your inquiries!