PACKAGING B: in a single transparent bag inserted in a box of 25 pieces and a single user manual with integrated declaration of conformity. This packaging is mainly designed for hospitals, clinics, medical offices and all users who know the use of the device well and do not need instructions that are associated with each individual device. The MM-4 Personal Protective Equipment is a respirator built in 5 layers with high-tech materials in non-woven fabric, melt-blown and hot air cotton intended to protect the streets respiratory from: non-oily drops and particles, oily particles and dust. The respirator model is without a valve. The mask in question is a Category III Personal Protective Device in accordance with Annex I of Regulation (EU) 2016/425. It complies with the requirements of the Harmonized Standard “EN 149:2001 +A 1:2009”.