Complies with U.S. NIOSH 42CFR84 N95 certification; Medical protective mask (certified by China's NMPA and U.S. FDA) for respiratory protection of occupational healthcare workers, protecting against certain pathogenic microbial particles (such as viruses, bacteria, molds, anthrax bacilli, tuberculosis bacilli, etc.); Can be used in surgeries, chemical experiments, dispensing, laboratories, preventing avian influenza, preventing colds, urban areas for protection against viruses and bacteria, and dust protection; 1860S children's version, size more suitable for children to wear. Instructions for use: Before each use, inspect the filtering facepiece. Except for the headband fastener holes, ensure there are no holes or other damages in the breathing zone. If the headband fastener holes are enlarged due to tearing or wear of the filter material, it should be considered damaged. Damaged protective masks should be replaced immediately. The holes for headband fasteners do not affect NIOSH certification.