"Negative Ion" sanitary napkins-Experts of health care . Because the "Negative Ion" could be release of active oxygen and improve lung function, promoting metabolism and enhance immunity, improve sleep, and other functions, and won the "air vitamin" "longevity of" reputation. our products unique negative ion chip in contact with the blood will release more than 6000 / cm3 of negative ions, can remove the body of harmful bacteria and odour of gas molecules for comfortable, clean and exception of smell role.