Latest Outbreak: Rising Positivity Rates Demand Indoor Defense
From April to May 2025, China’s COVID-19 cases rebounded in multiple regions, with positivity rate surging from 7.5% to 16.2% (CDC data) and households as key transmission hubs. Studies show aerosols can spread the virus indoors for over 1 hour, while masks filter only 30% of viral particles. 
Expert Advice: Synergy of Purifiers and Ventilation
Prof. Li Siwen from China Pharmaceutical University emphasizes: Increase air purifier speed (especially at night) to enhance airflow, but it cannot fully block viral transmission. Most purifiers use H13 HEPA (99.97% efficiency on 0.3µm particles), but SARS-CoV-2 is 80-120nm. Daily ventilation (twice, 30+ minutes) with closed patient room doors is essential.
Comefresh AP-H2819U High-Performance Air Purifier
1、5-Stage Filtration
• Pre-filter: Trap hair/dust, extends filter lifespan.
• Antibacterial Layer: Inhibit microbial growth and reduce secondary pollution.
• H13 HEPA: Capture 0.3µm particles. traps virus carriers (droplets/aerosols).
• Activated Carbon: Remove unpleasant odors.
• UV-C Sterilization: Destroy viral structure.
2、Smart Features + Ultra-Quiet
• Wi-Fi Control: Real-time PM2.5 monitoring via your mobile phone.
• 27dB Silent Mode: Quieter than page-turning, ideal for bedrooms.
• Child Lock: For family safety.
3、Cost-Effective, Effortless Maintenance
• Filter Lifespan: 4320 hours.
• Low Consumption: 55W±10%.
• Filter Replacement: Rotate-to-replace mechanism without any tools.
Explore Your Perfect Match!
Click to learn more about air purifiers and start creating a healthier home today!
Comefresh, an innovative small appliance manufacturer, offers smart air purification solutions (OEM/ODM service). Visit https://www.comefresh.com/ for more information!
Post time: May-21-2025