The filtering efficiency of 3M dust mask for non-oily particles is ≥95%, and it has protective effect on smog, dust, pollen, influenza virus and smoke in automobile exhaust. The mask is made of 3M electrostatic filter cotton, with upgraded design to reduce respiratory resistance.

The 3M dust mask is close to the face, and the elements of professional protective mask are embodied in three aspects: nose clip, ear strap design and three-dimensional tailoring. 3M hot and cold breathing valve can make breathing smooth, reduce the accumulation of heat and moisture, and the chin is not welded to eliminate the irritation to the skin, making it more comfortable to wear.

Matters needing attention in using dust mask

1. Use the dust mask according to the instructions. When wearing, you must completely cover your nose, mouth and chin, and keep the mask close to your face.

2. People with heart or dyspnea, dizziness, dyspnea and skin sensitive person are not recommended to wear dust masks to minimize outdoor activities.

3. It is not advisable to wear a mask with high filtration efficiency when riding a bike or exercising to prevent poor breathing. Please purchase qualified dust masks through formal channels.

The above contents refer to Baidu Encyclopedia-Dust Mask.