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Problem: There is a certain risk of infection when people pass through public places during the epidemic period of respiratory infectious diseases, which is not conducive to control the spread of the epidemic while reviving economic activities.
Solution: A set of flat air pipes which can be placed on the floor to form a customized grid network. The slits of the pipes can spray up the sterilized air flow to form an air curtain, which can block the air exchange between each grid, and continuously refresh the air from below, so as to avoid multiple people present in the same air grid at the same time, which could reduce the chance of infection.