(9:00AM to 5:00PM)
Because of the characteristics of the magnet material, the ring magnet is very strong, but the common teaching magnet in the box-shaped horseshoe-shaped magnetic is not very strong, many teaching magnets are magnet, Teaching magnets, the advantage is not easy to lose magnetism, that is, magnetic retention time is very long, in the teaching magnet can still be magnetic, magnetic attraction and repulsion is more obvious, suitable for primary and secondary school students to learn science class physics lesson.
