Nota: Devi essere registrato per rispondere al messaggio. Per registrarti, clicca qui. La registrazione è GRATUITA!
R E V I S I O N E D E L L A D I S C U S S I O N E
swpt_04EzhqNu
Inviata - 15/11/2020 : 20:40:25 1. The mask is contaminated with foreign bodies such as blood stains or droplets. 2. The user feels increased respiratory resistance. 3. Damaged masks. 4. Dustproof filter cotton: under the condition that the mask fits well with the user's face, when the user feels great respiratory...https://www.rollmed.net/face-mask/oxygen-mask-concentration.html