The white steel necklace like a ring is a Japanese brand. The popular Fato titanium necklace in Japan is also one of the necklaces similar to rings. And the products of Fato company in Japan. Is to use the special technology proprietary to Felt Company. Metal titanium is made into semi-soluble water-soluble titanium. Put it in the material. Make it into a product. It has no therapeutic effect on pain. It can also be adjusted to achieve a certain effect. Relieve fatigue. Relieve muscle pain and so on.