Product Features: 1、This product is made of Copper Melt-Blown fabric and Copper Non-Woven fabric. The main principle is the sterilization of bacteria and viruses by active metal ions of Cu2+Zn2+.A third-party professional organization has tested it. The test report shows that the killing effect of the product on coronavirus (SARS-CoV-2) is as high as 99.21%. And the killing rate of H1N1 and other viruses and bacteria is more than 99%. 2、Compared with other masks with only antibacterial surfaces, our product uses multilayer antibacterial materials from inside to outside.In particular, with the use of a patent with the independent invention of Copper Antibacterial Melt-Blown Fabric, the protective ability of the mask against the virus was significantly enhanced. 3、Because the mask's surface and core filter layer have the effect of killing viruses and bacteria, there is not any irritation after wearing the mask for a long time. It can effectively prevent cross- infection and secondary contamination. The mask can be reused—recommended to reuse for a period of one week.