1. ferromagnetic material: NdFeB's ferromagnetic components do not contain toxic elements. Except for B and Fe, most of the other added elements in NdFeB are heavy metals. Heavy metal elements can cause heavy metal poisoning. Other rare earth elements are very weak in radioactivity.
Neodymium magnet composition:
Neodymium 33%
Iron 64%
Boron 1%
Dysprosium 1%
Select 0.5%
Aluminum 0.5%
Secondly, at present, most of the magnetic jewelry on the market are natural black gallstones, and some of them are made of strong magnets wrapped in plastic and then electroplated. The buyer always stays with him for a long time, and no one says there is a problem! Moreover, it has been proved by experiments that it can promote the blood circulation of human body. Many medical instruments and health care equipment are also produced for this reason.
Citie 188 - COM