Lug-type specification: 17.5cmx9.5cm, composed of the mask body +nose clip+mask belt . Storage conditions: Packaging stored in relative humidity less than 80%, a cool, dry and ventilated indoor epoxy ethane residues.no corrosive gas . take mask the elastic hanging above the ear respectively, on both sides of the nose clips will aim at the nose, with hand pinched nose clip molding, folding, and then open mask debugging till to plug the nose mouth, this mask is a disposable product, replace one after wearing 4 hours, and discard it after use.
