T Ctca 7 2019 Translated English Of Chinese Standard T Ctca7 2019

This Standard specifies the terms and definitions, basic requirements, technical requirements, test methods, inspection rules, marking, label, packaging, transportation and storage of ordinary protective mask. This Standard is applicable to protective masks worn in daily life to filter out pollen, catkins, bacterial particulates, and to block contaminants exhaled or sprayed from the nasal cavity or mouth.