With the high temperature attack across the country, wearing masks poses a big problem for high-temp...
Can disposable medical masks be sprayed with medical alcohol for disinfection and reused? Feng Luzha...
Wearing a mask will increase the resistance to airflow, making it difficult for people to inhale the...
Epidemiology expert Zeng Guang said in an exclusive interview with CCTV reporters that wearing a med...
The main route of transmission of the new coronavirus is the spread of respiratory droplets. In prot...
While N95 masks were purchased and used in large quantities, how to deal with them after use became ...