One, strong magnetic materials: NdFeB strong magnetic composition does not contain toxic elements, NdFeB in addition to the B and Fe elements, most of the other added elements are heavy metal elements. Heavy metal elements can cause heavy metal poisoning. Other rare earth elements are very weak in radioactivity.
NdFeB magnet composition:
Neodymium 33%
Iron 64%
Boron 1%
Dysprosium 1%
Picks 0.5%
Aluminum 0.5%
Two: most of the magnetic jewelry currently on the market is processed using the natural black gallstone, and some of them is a piece of plastic. Powerful magnets and then electroplated, bought the people are long-term often in the body, no one said there is a problem ah! And the test shows that the human blood circulation has a role in promoting. A lot of medical equipment, health care is also produced.