| ◆ | Six-layer structure: Non-woven fabric, electrostatic cotton, melt-blown fabric, activated carbon, and shaping cotton |
| ◆ | High-efficiency melt-blown activated carbon layer: Removes organic odors with granular carbon |
| ◆ | 3D cup shape: Specifically designed and developed for the facial contours of Chinese people, providing a close fit and comfort |
| ◆ | Aluminum nose bridge strip with a built-in sponge nose pad: It has good shaping performance, offers comfort and reduces leakage |
