Because the "Aion" 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. The  negative ion chip in contact with the blood will release more than 6100 / cm3 of negative ions, can remove the body of harmful bacteria and odour of gas molecules for comfortable, clean and exception of smell role.We put 1 colpitis self-checking card in each bag,for the customer self-testing and contrast color card to know if has colpitis.