Fan also expressed his affirmation that many citizens said that the fog and haze should close their doors and windows. 4 mask, it was found that its tightness was quite good, and even the reporter was hard to tear it. No matter how small the diameter of the toner, it was locked in it and could not escape. He said that in any case, the indoor air is relatively cleaner than the polluted air outside, so it is right to close the doors and windows.

If there are patients with influenza virus in the family, they can also heat the vinegar to disinfect it. Before the experiment began, a reporter interviewed 20 citizens with masks on Bayi Avenue in Nanchang and found that 15 of them were wearing cartoon cute masks, and the Air Through Nonwoven Suppliers two were wearing one. 3 mask felt quite thick. So, among the disposable masks, ordinary absorbent gauze masks, cartoon masks and 3M masks, which mask is better able to resist the intrusion of suspended particles in the air? The mouth says nothing, the experiment is proof, this experiment will be announced for you.5. So, in their minds, what kind of masks can best resist the intrusion of airborne particles such as PM2.　　

Experimental method: In order to be able to simulate more realistically, connect one end of a long tube to a hair dryer and the other end to the mask for testing, and add the same amount of toner to each test. The boss told reporters that the people who buy such masks are mainly those who are usually exposed to dust, such as decoration workers, construction workers, etc.　　

Then, the reporter decided to choose four types of masks: disposable masks, ordinary absorbent gauze masks, general cartoon masks, and 3M masks for the experiment.　　 The sealing performance of 3M masks is higher than that of ordinary masks, so its effect of resisting dust is the best.) For this, this time The toner used in the experimental printer represents the suspended particles in the air, because most of the toner has a diameter of about 5 microns, and generally does not exceed 10 microns. It feels that it is thick enough and the gauze layer is too many.　　 Ordinary degreased gauze masks and 3M masks have good dustproof effect.