The 3M in the mask is both the company’s name and a registered trademark. 3M's full name is Minnesota Mining and Manufacturing Company. 3M is a global diversified technology company.

The anti-particulate mask products sold by 3M in China originate from different origins. In addition to obtaining the certification required by the place of origin, they have also obtained China Labor Safety (LA) certification. "3M masks" refers to all products produced by 3M that can be called masks, such as thermal masks, anti-particle masks (dust masks), medical protective masks and medical surgical masks, etc.

3M Company is the inventor of particle protective masks. In the United States in the early 1970s, 3M Company pioneered the world's first anti-dust mask covering the mouth and nose area made of new particulate filter materials. It was widely used to protect various types of workers exposed to high concentrations of dust at work, and subsequently For more than 40 years, it has continued to conduct in-depth research on particle protection technology and designed and produced a wide variety of protective masks with different functions.

3M mask size classification:

Some 3M protective masks can be divided into standard and small sizes for users to choose according to their face size. 9102CS is the smaller size of 9102C, 9003 is the smaller size of 9001, 9004 is the smaller size of 9002, 8110S is the smaller size of 8210, and 1860S is the smaller size of 1860, etc. They are all masks of the same grade and different sizes.