Clean Air Anywhere in Any Form As a one stop solution provider, we deliver an optimal combination of patented air purification hardware and data services that are best suited to commercial customers' respective needs and issues. Our Technology PACONANOTECH TM (PACO-Plasma AssistedCatalytic Oxidation) is the revolutionary technology co-developed by ASA Innovation & Technology Limited and City University of Hong Kong. The technological break through is the extraordinary filtration efficiency with prolonged filter life span.