3-layer filter is soft and comfortable
External protection from dust and pollution
Effective dust and pollution filters
Practical, Hygienic, Economical
Filtering efficiency of 95%
Box contains 50pcs
Product performance and structure:
- 1st layer - blue non-woven fabric
- 2nd layer - polypropylene meltblown fabric
- 3rd layer - white non-woven fabric
This product is sterilized by ethylene oxide. Sterility period is 3 years. Expiry date [03/05/2023]