Ultraviolet sterilization is the use of appropriate wavelength of ultraviolet light can destroy the DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) in the cells of the microbial body, resulting in growth cell death and/or regenerative cell death, to achieve the effect of sterilization. UV disinfectiors use specially designed high-efficiency, high-intensity and long-life UVC band UV light irradiation to directly kill various bacteria, viruses and other pathogens in the air.