The document discusses issues related to poor indoor air quality and hygiene risks, particularly in washroom facilities. It notes that bacteria, viruses, molds and fungi can multiply rapidly in indoor environments and be spread through the air or on surfaces, posing health risks. Conventional cleaning and masking methods are ineffective as they do not address the root causes. The document then introduces an air purification system called Air Steril that uses photoplasma technology to destroy microorganisms in the air and on surfaces, eliminating odors at their source and reducing health risks. Customer testimonials praise the effectiveness of Air Steril in improving air quality.