Virus Buster Blue Mask is an anti-virus mask with the ability to kill viruses by combining copper ions into the fiber surface. Virus Buster Blue Mask is a product applied with copper ion effect, and the copper phosphorus in contact with the virus passes the virus' shell protein through "microscopic action" and at the same time decomposes the virus' RNA to kill the virus.It also has the effect of sterilizing germs along with viruses. Copper-ion-bound polymeric fiber "CAZ" applied to blue masks is a fiber material that strongly combines copper ions on the surface of the fiber under its molecular structure and is currently being developed and produced by MediFiber to develop not only masks but also virus sterilization gloves, medical gowns, and protective clothing.