Ultraviolet sterilization: C-band ultraviolet deep ultraviolet radiation can penetrate virus shells, fungi, bacteria, spores and cell walls of other organisms, destroy and change the molecular structure of DNA or RNA of bacteria and other microorganisms, affect the ability of nucleic acid replication, and make bacteria die immediately or fail to reproduce, thus achieving the purpose of sterilization and leading to microbial death, especially the deep ultraviolet radiation with the effect of 240nm-280nm is the best.
Ultraviolet sterilization is relatively safe, so it is widely used in hospitals where sterilization is needed, indoor sterilization, and sterilization lamps for medical devices. The principle of ultraviolet sterilization is to destroy the DNA of microorganisms, which belongs to physical sterilization and can effectively kill all germs in principle.
Washing machine purchase guide
Determine the purpose: first of all, you need to determine the purpose of the washing machine. If it is home, you can choose the drum washing machine, because the drum washing machine has low wear rate on clothes, less water consumption, uniform washing and adjustable water temperature. If you rent a house or need to move frequently, it is recommended to choose a pulsator washing machine, because it is relatively cheap, simple to operate, mobile and convenient to set up procedures.
Consider location and size: when buying a washing machine, consider the size of the home location and the design of water supply and drainage. At the time of purchase, the salesperson can recommend the appropriate model according to the actual situation of his home.