Industrial alcohol used for disinfection has a great danger, the concentration of ethanol in industrial alcohol does not reach the concentration of 75% of alcohol applied, it is not able to effectively kill bacteria, viruses and other pathogenic microorganisms. Industrial alcohol usually contains a lot of impurities, such as formaldehyde, acetaldehyde, etc. These substances not only do not have any disinfection effect, but also can be very harmful to the human body. Therefore, in disinfection or sterilization should be used 75% alcohol for disinfection, rather than industrial alcohol disinfection. Industrial alcohol disinfection that does not play a role in disinfection, but will cause great harm to the human body, it will not be worth the loss.