... years experience 5.SGS,CE Report Item NameTHB Vitality Negative ion Bracelet MaterialTitanium,germanium,negative ions, silicone,POM claspsizeSize: ... has multiple functions. Because of its dehydrogenation of oxygen-enriched, enabling sufficient oxygen to maintain physical fitness, so as to ... ions out of the body, reducing the body's oxygen demand, thus contributing to health.The role of negative ...