Huaxi plasma air sterilization adopts bipolar plasma electrostatic field to break down negatively charged bacteria and adsorb polarized dust .The second sterilization procedure includes drug-impregnated carbon, electrostatic net, cold catalyst catalysis and other devices. Large amount of processed air circulates rapidly, keeping the controlled environment at the standard of 'sterile room'.

Plasma is rich in living radical polymerization, which can effectively kill microorganisms in the air ,degrade harmful substances in the air and destroy the transmission route of corona virus, and greatly reduce the virus infection rate in confined spaces. Plasma sterilization is fast and thorough, its killing rate of natural bacteria>90%(60mins), killing rate of Escherichia coli, Staphylococcus aureus and Candida albicans>99.9%(40 mins).45 minutes after power on, sedimentated bacteria<15CFu/petri dish, planktonic bacteria<800/m3

Chinese ultraviolet air disinfector uses UV irradiation to achieve disinfection. Ultraviolet light of appropriate wavelength can destroy the molecular structure of DNA (deoxyribonucleic acid) or RNA (RNA) in microbial cells, causing growth cell death and (or) regenerative cell death, so as to achieve the effect of sterilization and disinfection. Ultraviolet disinfection technology is based on modern epidemic prevention, medicine and photodynamic, using specially designed UVC band ultraviolet light to irradiate circulating air to kill pathogens.

In the air disinfection test, the sterilization rate of natural bacteria in the air is more than 90% in 60 minutes, and the killing rate of Staphylococcus albus (8032 strains) is more than 99.9%. Ultraviolet radiation combined with photocatalyst can effectively kill microorganisms in the air, filter harmful substances in the air, greatly destroy the transmission path of coronavirus, and greatly reduce the virus infection rate in confined space.