Ultraviolet light is to destroy the molecular structure of DNA (DNA) or RNA (ribonucleic acid) in the cells of microorganisms by using the appropriate wavelength of ultraviolet rays to achieve growth and / or regenerative cell death. Ultraviolet disinfection technology is based on modern anti-epidemiology, medicine and photodynamics. It uses specially designed high-efficiency, high-intensity and long-life UVC band ultraviolet light to sterilization and disinfection.