"Air pollution, the fourth leading risk factor for early death, added 6.67 million global deaths in 2019"

PACO-Plasma Assisted Catalytic 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.

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Patented Technology

Globally Exclusive

Co-developed with city university of Hong Kong

Powerful Virus elimination.

Did you know?

PACO can destroy 99.99% viruses (H3N2) which is tinier than COVID-19 ! *

* H3N2 = 0.08-0.12 microns
  COVID-19 = 0.125 microns
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PACO Nanotech Working Principle