The proton exchange membrane fuel cell has the advantages of being lightweight, efficient, high specific power, high energy conversion rate, low starting temperature and environmentally friendly. It is an ideal…

Nowadays, there are many types of masks on the market, but generally they can be roughly divided into industrial masks, medical masks, civilian masks (that is, daily protective masks), and professional anti-haz…

The return of smog tells us that for people living in big cities, it is a long-term project to completely solve the smog problem. At this stage, we can only prevent smog from entering the respiratory tract. The…

Nowadays, there are many types of masks on the market, but generally they can be roughly divided into industrial masks, medical masks, civilian masks (that is, daily protective masks), and professional anti-haz…

Because of the haze, many people started buying and wearing masks instead of not wearing masks at first. Nowadays, masks have become a necessity in our lives. However, many people have doubts about how much smo…

Whenever smog comes, people wearing masks are everywhere in the streets and alleys. There are also many recommended masks on the Internet to prevent PM2.5, and the polytetrafluoroethylene mask film plays a huge…

In the cold winter, crowded crowds, and various respiratory pathogens are getting closer and closer to us. How can we keep respiratory infectious diseases, especially influenza, away from us? The answer is to w…

In hazy weather, it is really important to take personal safety precautions. For example, wearing a high-quality mask during outdoor activities is the kind of thing that needs to be highlighted in capital lette…

Due to the particularity of the clean room, in addition to strict design, construction, and debugging, in order to ensure its safety during the production process, it must be equipped with high-efficiency filte…