Maybe air purifiers or effective HVAC systems? All of these are great ... despite our knowing about it for over a century: light. Ultraviolet light is an incredibly powerful disinfectant.

in the visible light spectrum. Due to the fact that the furnace is under heavy development it is much more comfortable to add features, fix small bugs and test the workflow. This shows the flexibility ...

This new air-conditioner series is available in ... It incorporates UVC Sterilization, with preinstalled ultraviolet (UV) ...