Each time the measurement index will be different, as long as the negative ion index is within 500-3000, it is a health index, which can effectively help the human body to improve blood circulation problems.
Each measurement index will be different. As long as the negative ion index is within 500-3000, it is a health index, which can effectively help the human body improve blood circulation
Each measurement index will be different. As long as the negative ion index is within 500-3000, it is a health index, which can effectively help the human body to improve the blood circulation.