Public transport systems, such as metro stations, buses, and airports, require high-efficiency air filtration to reduce airborne pollutants, fine dust, and allergens. Our HVAC HEPA filter materials and high-efficiency particulate air filter media help enhance indoor air quality in public transportation hubs. Designed for use in train ventilation systems, subway station air purifiers, and airport HVAC filtration, our solutions contribute to passenger comfort and health.
Industry Challenges
Dust Accumulation
Clogging HVAC systems in underground stations
Fire Compliance
Meeting DIN 5510/NFPA 130 smoke toxicity limits
Corrosion Risks
Moisture & chemical exposure in tunnels
The Hidden Threats in Public Transport Infrastructure
Underground Air Crisis
PM2.5 Avalanche: Subway air contains 6x more fine dust than street level – equivalent to passively smoking 2 cigarettes per 30-minute commute.
CO₂ Drowsiness: During rush hours, platform CO₂ levels reach 2,500ppm (like 150 people breathing in a sealed minivan).
Viral Highways: Recirculated air spreads 58% more respiratory viruses (comparable to sharing a mask with 10 strangers).
Outdated Solutions
Primitive Filters: 80% stations use fiberglass filters missing 70% of PM1 particles (like stopping rocks but missing sand).
Oversized Fan Paradox: Running 500HP fans costs $3.2M annually – enough to electrify 80 buses for 10 years.
Chemical Fog Risks: Disinfectant sprays increase asthma ER visits by 22% among staff.