- 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

