Sign up for an Award
Participate with your entry in one of our professional or student awards.Sign up for an award
You are using an outdated browser. Please upgrade your browser to improve your experience.
Because COVID-19 is highly contagious and caused great panic to the society, it is difficult to achieve precise prevention and control. This KSH mask can achieve precise prevention and control of a certain area through observing breathing valve color changes, which greatly reduces the risk of infection and social panic, and also reduces the demand for disposable masks. After the epidemic, the same method can be used to prevent and remind viruses such as seasonal cold viruses and flu.