- Filter is waterproof and has the ability to filter bacteria, viruses and particles.
- Filtration efficiency: BFE (bacteria filter) > 99%, VFE (virus filter) > 98%
- Elastic band has good elastic function, does not cause skin irritation
- The nose band is designed from an adjustable plastic frame so that the mask fits nicely.
- Meet medical standards (TCVN 8389-1)
- Quality standards and certifications: ISO 9001, ISO 13485, Vietnam Pharmacopoeia V
![](https://chaungocthach.com.vn/wp-content/uploads/2023/05/z4371974243224_06c5683ea887528fd88d58467f1b115d-2048x368.png)
![](https://chaungocthach.com.vn/wp-content/uploads/2023/05/z4368988543713_ee929c5ce3a475dd7c0bdb33235c75cb-2048x278.jpg)