reusable nose dust mask chemical respirator np 306
1. Made of medical-level PVC, makes you wearing more comfortable.
2. Spiral fixation for easy removal of old filter.
3. Suitable for finding or maining ore and other underground excavations, also wildly used in building industry, foundry industry, field-crop production, cement plant and so on.
4. It can effectively protect people from the harm of nonferrous metal, heavy metal and asbestos, etc.