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- Peel off 2 layers of protective film before using.
- Adjust the laces to fit user's head circumference.
- hooking a mask strap on an artificial ear helps keep ear pain away from prolonged use.
- Easily cleaned and sterilized with alcohol, disinfectant solution, soap, boiling water and specialized sterilization machine.
- Wipe the surface with cloth and smooth paper to avoid scratching the PET film.
- Adjust the front shield film perpendicular to user's view.
