Beijing laowei 301-4 dust half mask

Rubber plastic body, soft and non irritating;
plug-in headband, wear and take off quickly;
combined sheet filter material, economical and practical;
suitable for dust operation with general strength;
cooperate with B88 circular composite filter chip;
support to press mask tightly and feel comfortable;
hinge expiratory valve cover, better protect expiratory valve;
double box dust mask, large filtration area, both coarse and fine filtration, long service time;
waterproof filter box cover, can be used in the environment with water splashing (such as mining, grinding and other operations).
colour: green