Advantages Nano Maintenance SB-101 is 1) more effective than alcohol to sterilize viruses, such as influenza, Noro, E.coli, or a family of coronaviruses including MARS and SARS. * Certified by the official inspection organizations in Japan. 2) safe and secure, almost harmless to the human body and protect hands from rough skin. 3) available in a room when nobody is there as it is odorless and prevents color fading or metal corrosion. 4) able to keep for 3 years at room temperature with our container and technology of delaying deterioration.