(1)Strong magnet don't close to electronic equipment,  which will affect the electronic equipment , control loop and the use.

(2) Strong magnet can not stored in a humid environment, so as to avoid the oxidation,resulting in physical properties,and the changes of  magnetic properties.

(3) Magnets are sensitive to metal objects, if the man approaching to the magnet, which could cause rough skin, or red skin. If the above reaction, please do not contact the powerful magnet.

(4) Strong magnet can't be close to a floppy disk, hard disk drive magnet, credit cards,debit cards, tapes, television picture tubes, etc.. If the magnet is close to the magnetic recorder devices which will affect or even destroy the record data.