Experts point out that wearing a mask is like setting a "filter barrier" to your respiratory system. This barrier must block particulate matter, droplets, etc., and ensure smooth breathing. Especially children’s lungs are relatively weak, and children masks worn for a long time first require comfort......
Read MoreWith the prevalence of new coronavirus pneumonia, masks are out of stock in many places. But there are still many people who do not know what kind of mask should be used.After all, there are disposable medical masks, paper masks, cotton masks, activated carbon masks, etc, many people can't tell clea......
Read MoreThe outbreak of the New Coronary Pneumonia epidemic has made people pay more attention to public safety. In this epidemic prevention and control work, the most widely used are infrared forehead thermometer and infrared screening instrument, but after using infrared thermometer, many people feedback ......
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