https://www.prnewswire.com/news-releases/kaltechs-disinfectant-deodorizer-proved-to-have-infectivity-suppression-effect-against-novel-coronavirus-covid-19-floating-in-fixed-space-301182149.html

Kaltech Co., Ltd., an innovator in air and water purification and a leader in chemistry and system engineering in Japan, today announced that it will begin selling their air deodorizer and water filtration systems in the United States, debuting at CES 2022, the world’s largest consumer electronics show, in Las Vegas in January 2022. Kaltech has developed the world’s first product line utilizing photocatalytic technology and in 2020, Kaltech dominated Japan’s photocatalytic air purifier industry with 40% of the market share.

https://www.globenewswire.com/en/news-release/2021/12/07/2347491/0/en/Kaltech-Corporation-to-Debut-Air-Purifier-and-Deodorizer-Product-Line-in-the-United-States-at-CES-2022.html

Households have been advised not to use ultraviolet-C (UV-C) sterilisers at home as many such devices marketed for home use lack safety features that protect users from unintended or accidental exposure to radiation.

Read more at https://www.todayonline.com/singapore/many-ultraviolet-c-sterilisers-sold-online-unsafe-home-use-pose-risk-radiation-exposure