1. First, we get disposable masks and flatten the masks to keep the skin dry and white facing inward. 2. Secondly, hang the disposable sanitary mask on both sides of the rope to the ears and adjust it from left to right to make the force on both ears even. 3. Open the folding part of the mask up and down to completely cover the mouth and nose. 4. Use both hands to adjust the nose plate of the mask to fit the face. 5. Adjust the sides of the mask. Smooth the sides of the mask so that it fits the face. 6. This mask is a disposable item. It is recommended to wear each mask for no more than one day. If you do not wear the mask temporarily, put it in your bag to avoid dust.Material: non woven,melt blown fabric,melt blown fabric，hot air cotton，non woven Function: Anti-dust-smog-virus-pollen Certification: CE0307 Executive standard: FFP3（EN149:2001+A1:2009） Layers: 5 layers Moq: 3000pcs BFE: 99% Color: White Lead Time: 2000-10000pcs  2days; 10000-100000pcs  7days. Packing Detail: 1pcs/pack , 40pcs/box，600pcs/ctn Size: 15.5*12.5cm Customization: Customized logo(Min. Order: 100000 Pieces); Customized packaging(Min. Order: 100000 Pieces).