Ing. Jan Prochazka, Ph.D. he is also an extremely patient person. And thanks to his professional experience and this characteristic he has... read more
Desinfekční prostředky na nás doslova číhají na každém kroku.
Nepřerušovanou školní výuku však dokážeme zajistit i bez jedů ve vzduchu.
Kde... read more
Ozone is a poisonous gas that damages the lungs (https://www.lung.org/clean-air/outdoors/what-makes-air-unhealthy/ozone), so its presence in the inhaled air is very... read more