Hall Fresh Air adopts the world's top NEPT air purification technology, breaking through the traditional filtering purification characteristics, and efficiently filtering the gas entering the room through four layers. It not only efficiently kills harmful microorganisms, bacteria, and viruses in the classroom air, but also discharges harmful gases such as formaldehyde, benzene, and carbon dioxide, eliminating odors in the air. At the same time, it has a super strong purification effect on fine and small pollutants such as PM2.5 and bacteria. The purification rate for biological, chemical, physical, and odor pollution sources is all above 99%....

The Hall fresh air system can continuously supply fresh, clean, and oxygen rich air that has been purified and sterilized to the indoor environment 24 hours a day, even when the doors and windows are tightly closed. It also discharges polluted air containing carbon dioxide, formaldehyde, and PM2.5 from the indoor environment, replacing the air while the graphene total heat exchanger recovers cold and hot energy. Ensure that indoor air is at a constant temperature, humidity, cleanliness, and oxygen to create a healthy and comfortable indoor environment....

Hall New Air Hospital's disinfection and fresh air series products include HEPA high-efficiency filtration, ultraviolet air disinfection, cold catalyst adsorption, negative ion disinfection and sterilization, photo water ion decomposition and purification and other purification technologies. They can comprehensively and effectively solve various types of polluted air in the hospital, efficiently kill harmful microorganisms, bacteria and viruses, and actively decompose harmful gases such as formaldehyde, benzene, ammonia, etc., eliminating moldy and odorous odors in the air. At the same time, it has a super strong purification effect on fine and small pollutants such as PM2.5 and bacteria. The purification rate for biological, chemical, physical, and odor pollution sources is all above 93%....

The Hall Fresh Campus Air Quality Centralized Display System is a set of systems designed to facilitate the display of indoor air quality to all school staff, teachers, and parents. It can display the air quality of each room on each floor, including temperature, humidity, AQI, PM2.5, CO2, and TVOC, on a separate TV screen in the lobby or elevator entrance and exit. Based on the air quality detected by the equipment and the indoor pressure difference, the fan airflow is adjusted to achieve the desired indoor air quality....

Professional research on indoor environment and control shows that indoor air pollution is 2-5 times more severe than outdoor air, and can reach up to 10 times in special circumstances. There may be over 400 chemicals and 900 different organic compounds in the home environment, and pollution comes from various aspects of life, including smoking, cooking, dust, pet dander, harmful gases emitted from household cleaning products and furniture, and indoor PM2.5 pollution....

The Hall fresh air system is designed to create a high-quality home environment for family members. It filters and purifies fresh air with sufficient oxygen content from outside through multiple processes before sending it indoors. At the same time, it discharges polluted indoor air to the outside and ensures that the indoor air is always in a clean and fresh state through 24-hour continuous circulation and replacement.