Paul Dubsky
Süddeutsche Zeitung: Community purchases hundreds of special air purification devices
"They disinfect the air drawn in successive steps and neutralize 99.99 percent of the viruses and germs contained in the air in a room. The technology behind it is a patented, multi-stage system of high-performance microfilters and plasma reactors. According to the municipality, a total of 228 devices were procured for the grammar school and town hall."

"Everything possible has been implemented" to protect citizens, according to the town hall."
Link to article here.