Hisense Fresh Master air conditioner is equipped with HI-NANO technology. “It generates efficient high-concentration dual ions up to 1 million/cm3 – the company explains -. Bacteria and viruses lose their activity after being absorbed by dual ions, resulting in an inhibitory effect“. “HI-NANO releases twice to three times the number of ions when compared to ordinary ion generators – the company adds -. A viral clearance performance of 90% removal rate in one hour and 99% in two hours has been verified. Besides, it only produces half of ozone (0.007mg/m3) in comparison with ordinary ion generators, which causes little harm to the environment. And the generator is able to remain high-quality performance for 20 years”. As reported by the company, the HI-NANO technology can inactivate Covid-19. “This techology – the company explains – is certified effective on inducing the novel coronavirus (SARS-CoV-2) with an inhibition rate of 93.54% by Texcell, a global contract research organization. The test was performed at Texcell’s laboratory in Paris in February 2021. Also, verified by the world’s leading testing group SGS’s, HI-NANO can effectively remove over 99.37% of the H1N1 influenza virus in 2 hours in a 30 m3 chamber”.