In a recent study by the prestigious trade journal "New England Journal of Medicine" (NEJM), it was concluded that the Sars-CoV-2 virus was highly likely to be transmitted by aerosol suspended particles. Scientists have shown that the virus can survive for up to three hours, hanging in the air in the form of invisible small particles, ie droplets, that come out of our mouth during sneezing, coughing and talking. Viruses such as the terrible SARS-CoV, MERS-CoV, or the new type of coronavirus SARS-CoV-2 that are emerging now have similar sizes. Current research states that the particle size of a single corona virus will be 0.12 to 0.16 micrometers (12 to 16 nanometers), but the virus is usually thrown into the environment by coughing or sneezing as an 'aerosol' consisting of a mixture of solid and liquid. Many airborne particles, gases, and water vapor are present and are significantly larger than these viruses. With professional air cleaners with high performance filters, we will ensure effective corona virus filtering.