| 摘要 |
PURPOSE: An anion-generation key is provided to keep the body of user health by protecting the human body from electromagnetic waves using anion. CONSTITUTION: An anion-generation key comprises an anion coating layer. The anion-generating material is taped in a part of the anion coating layer. The anion-generating material comprises one or more material selected from tourmaline powder, tourmaline powder, kiyoseki, elvan, mineral rock, sericite and biotite. The anion-generating material is included of tourmaline powder.
|
