Beijing laowei 101e7 gas mask

in line with the national standard gb2890-2009;
double box anti-virus mask, does not hinder the work of lowering the head, affects the lower visual field is small;
rubber plastic body, soft and non irritating;
bracket compression mask, tight and comfortable;
plug in headband connector, wearing and taking off quickly;
canned anti-virus agent, economical and practical;
suitable for long time, low strength Toxic operations (e.g. decoration, etc.).
size: medium , please