Notre Dame 2020 cloth face mask. How do people know if a mask is made of antibacterial cloth? According to Associate Professor Anh Thu, the naked eye users will not be able to identify which is the regular cloth mask, which is antibacterial cloth mask, but only based on the commitment and supporting documents of the manufacturer.
Manufacturers must prove that the data is effective and safe for users. An antibacterial cloth mask should also have functions such as a medical mask such as a waterproof cloth, filter and antibacterial layer, moisturizing layer, certified by the Ministry of Health as bactericidal to kill viruses, or international certification.