Antibacterial agents are added to the surface layer of non-woven fabric and the inner layer of melt-blown fabric to easily filter large particles of dust while inhibiting the colon <br>Bacilli, Staphylococcus aureus, mold and other bacteria and molds breed, and the antibacterial rate is 99.99
An activated carbon layer is added to the inner layer of the melt-blown cloth to effectively absorb odor and facilitate installation.
**The antibacterial agent is effective for 2 years if it is sealed, kept dry, and not exposed to sunlight. The antibacterial effect can be maintained within 2 years after opening.