Good Day!This is michael from LAD air sterilizer. LAD is one of the biggest manufacturer for air sterilzier since 1997 in China. Our air sterilzier can be used in hospital,church,school,workshop,beauty salon,shopping mall,office,etc public place,hvac duct,air conditioner system kill virus through UV lamp+plasma electric field+hepa filter+anion,not only purifer function. Please kindly check our catalogue,welcome your any enquires.