Recently, a research team from Peking University released the "Air Quality Assessment Report: Statistical Analysis of Air Pollution in Five Cities in China". The report shows that the cities with the most severe pollution in China are Chengdu, followed by Beijing, Shenyang, Guangzhou, and Shanghai. The survey results show that air pollution has been deeply disseminated from the original Beijing, Shanghai, and Guangzhou to inland cities. Especially Chengdu's listing is surprising. This survey report has once again aroused the public's attention to air quality. However, the improvement of air mass will be a long-term and slow process, and various air purification measures have become an essential means to ensure respiratory safety in the short term.

Fresh air system is an effective guarantee for respiratory health
 The new air system is characterized by efficient purification and filtration of PM2.5, and ensuring the oxygen content of indoor air, quickly occupying the air purification market. In just a few years, fresh air system enterprises have blossomed everywhere, and the fresh air system has achieved rapid penetration from high-end office buildings to ordinary households. The function of the fresh air system has evolved from a single air supply to an air purification equipment with multiple functions such as oxygenation, purification, dehumidification, deodorization, sterilization, and heat exchange, becoming the top choice for people to choose air purification equipment.
 Shen Yabin, Vice President of Guangdong Indoor Environmental Hygiene Industry Association and Chairman of Hangzhou Kali Intelligent Technology, has been engaged in research on indoor air composition and separation (purification) basic materials and technologies since 1999. He is a well-known anti haze expert. Shen Yabin introduced that the fresh air system can scientifically organize airflow, improve indoor air quality, and continuously provide fresh air for indoor use 24 hours a day, ensuring respiratory health.
 The fresh air system generally inputs more air than it draws out, which creates positive pressure and allows indoor clean air to be slowly squeezed out through the door gaps, avoiding unfiltered outdoor air from being sucked in through the door gaps, ensuring indoor air cleanliness.
 At the same time, the fresh air system can expel harmful indoor gases, effectively eliminating various harmful gases such as fumes, formaldehyde, and second-hand smoke. After installing a fresh air system, newly renovated residential or office spaces can greatly shorten the empty time for deodorizing formaldehyde and reduce the risk of respiratory and cardiovascular diseases.
 Shen Yabin and his indoor air quality research team installed the FILTECH Feide?Whole House Synchronous Air Purification System in classrooms of Caihe Second Kindergarten, Lvcheng Yuhua Primary School, Yucai Primary School, and other schools. After six months of tracking and monitoring, the results showed that after installing the FILTECH Feide ? Whole House Synchronous Air Purification System in classrooms, students' colds and coughs were significantly reduced.
 Experts are optimistic about the market prospects of the new wind industry
 The fresh air system was gradually recognized by the public after the SARS outbreak in 2003, but at that time, the main function of the fresh air system was to improve ventilation. In recent years, with severe haze, most fresh air systems have developed filtration and purification functions, and the filtration efficiency of PM2.5 is high, ensuring that fresh and clean oxygen is replenished indoors at any time. This is incomparable to other air purification equipment. The fierce competition in the current fresh air system industry has also prompted fresh air system enterprises to focus on the third stage, which is the innovation of air purification technology.
 At the standardized air purification CADR laboratory of Hangzhou Kali Intelligent Technology, various gas detection equipment and filtering materials were displayed to the editor, as well as the purification effects of various filtering methods such as HEPA membrane filtration, electrostatic filtration, and activated carbon filtration. Shen Yabin stated that the development direction of fresh air systems must be towards "intelligence+pure physical purification without secondary pollution+convenient installation+energy conservation".
 Shen Yabin and his team are developing a new generation of FILTECH ? Whole House Synchronous Air Purification System, which operates continuously throughout the year and may not consume as much electricity as your home lighting. Shen Yabin introduced that the technological innovation process of the fresh air system will be a process of survival of the fittest in the industry. Whoever has the technology ahead will win the hearts of consumers.
 In the future, our country may spend more than a decade or even decades to control air pollution, and in parallel with this will be the popularization of synchronous air purification systems in Chinese households. After all, breathing is a big thing that everyone cannot stop for a moment. The technological innovation in the air purification industry will enable more and more consumers to enjoy a healthy and clean new atmosphere. Who can solve the pain of breathing under the haze, who can create a dome under the haze, who can be the first to win the market and seize the opportunity.