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To avoid COVID 19 infection, you need face masks . 1.  Confirm the front and back, wear the ear hanger;2. Close to the face, pull back the mask to completely cover the nose and chin;3. Press on the bridge of the nose and press on both cheeks from the bridge of the nose. 1.  It is strictly prohibited to use after the package is damaged;2. This product is a disposable mask, please destroy it after use;3. The production date and validity period shall be shown in the seal of the package or the bag's qualification certificate. Source: https://www.unisourcesgroup.com/Facemask/

Product performance: in line with GB/T 32610-2016, technical specifications for daily protective masks; Filtration efficiency ≥ 90%, Protection effect ≥ 65% Material structure: the product is composed of spunbond and meltbrown material. Usage: 1. Confirm the front and back, wear the ear hanger;2. Close to the face, pull back the mask to completely cover the nose and chin;3. Press on the bridge of the nose and press on both cheeks from the bridge of the nose. Precautions: 1. It is strictly prohibited to use after the package is damaged;2. This product is a disposable mask, please destroy it after use;3. The production date and validity period shall be shown in the seal of the package or the bag's qualification certificate. Storage conditions: dry, room temperature storage, avoid direct sunlight. Please refer to the instruction for other information. Source:   https://www.unisourcesgroup.com/Facemask/