3M is not only the name of the company, but also a registered trademark. The full name of 3M Company is Minnesota Mining Manufacturing Company. 3M is a global diversified technology enterprise.

3M's anti-particulate mask products sold in China come from different places of origin, and all of them have been certified by Lao An (LA) of China in addition to the certification required by the place of origin. "3M mask" refers to all products produced by 3M company that can be called masks, such as warm masks, anti-particle masks (dust masks), medical protective masks and medical surgical masks.

3m951 mask is a KN95-level smog-proof PM2.5 industrial dust-proof mask and an anti-bacterial virus particle mask.