Magnetic Assemblies UMAG has good experience of making magnetic assemblies according to the specific requirements of customers. For the customer's required applications, magnets with various materials including NdFeB, Hard Ferrite, and AlNiCo etc and various shapes, are combined with other materials such as steel, iron, copper and plastics etc. UMAG products include rotor systems for motors, steel systems for sensors, driver systems for speakers, chuck systems for fixation and so on.