recirculation filter, capacity 85 000 m³/hour  2011

recirculation filter, capacity 55 000 m³/hour   2005

recirculation filter, capacity 30 000 m³/hour   2006

recirculation filter, capacity 40 000 m³/hour   2011

boiler house, capacity 1.6 MW   2001

boiler house, capacity 1.5 MW  2006