A strong magnet refers to a neodymium magnet. Compared with ferrite magnets, Al-Ni-Co and Sm-Co, its magnetic properties greatly exceed those of other magnets. Neodymium magnet can absorb 640 times its own weight, so NdFeB is often called a powerful magnet by laymen.

Precautions for storing powerful magnets:

1. Do not put strong magnets near electronic equipment. Approaching it will affect electronic equipment and control circuit, and affect the use.

2. Don't store the magnet in a humid environment to avoid its oxidation, which will lead to changes in appearance, physical characteristics and magnetism.

3. If people who are sensitive to metal objects are close to magnets, their skin will be rough and red. If the above reaction occurs, please do not touch the strong magnet.

4. Don't put magnets near floppy disks, hard disks, credit cards, tapes, debit cards, TV picture tubes, etc. If the magnet is close to the magnetic recorder and other equipment, it will affect or even destroy the recorded data.