Even if the virus adheres to the surface of the mask, it can be prevented from adhering to the hand by touching the copper part when touching the mask with the hand, and "the spread of the virus from the hand to the object can be reduced". I will.
In addition, even if a virus adheres to your hand, you can "reduce the risk of the virus entering the body" by touching the copper mask, which helps prevent virus infection.
The use of GUD masks does not completely prevent the invasion of viruses, but it is intended to prevent indirect infections.