Recently, the smog weather has risen again, and many small partners have put on masks, but the weari...
Medical surgical masks must comply with my country's pharmaceutical industry standard number: YY 046...
This time, I will popularize the use and precautions of escape respirator. Escape respirator is coll...
1. Preparation: detergent, paper towels, rags.
With the spread of the new crown pneumonia epidemic around the world, various protective equipment h...
This article introduces the precautions for using KN95 masks