Air purifier is also known as the air freshener machine, purifier and air cleaner, the function is to decompose or transform the impurities in the air , it can improve the cleanliness of the air, generally used in domestic, commercial, industrial applications. From 2016 to 2020, the sales volume of air purifiers in China is still very good, but in 2018, the sales volume has a significant downward trend, in fact, it is also affected by the haze and other weather. In 2017, sales of air purifiers increased sharply, because of serious air pollution. The reason for the decline in 2018 is that China's environmental governance has improved well, and the demand for air purifiers has fallen.

By 2019, product sales had rebounded again, with a 24.07% year-on-year increase in 2018, mainly due to the panic caused by some sudden environment impact of domestic consumer groups, and entered the era of rational consumption. In 2011, sales are also likely to grow by 0.4% year on year. The analysis of the development trend of the air purifier industry is mainly reflected in the following points：

1. Compared with developed countries, it has greater space for development

There are still some gaps between developed countries and developing countries. Compared with the development of China's air purifier industry, the market penetration rate of Japan, South Korea, Europe and the United States and other developed countries is still relatively low, and it is currently in the stage of rapid growth. With the improvement of the per capita consumption level, the economic development speed is getting faster and faster, coupled with the impact of some epidemics and special weather, domestic consumers have higher requirements and attention to the air quality, and it is expected that the development of the industry will have more space in the future.

2. Per capita income increased, and health awareness increased

Nowadays, people have more and more disposable income, and people also pay more and more attention to health, and have a stronger health awareness. One of the main factors causing non-communicable diseases is air pollution, so the air quality has now become the focus of public attention. Air purifier can control indoor dust, bacteria and particle pollutants, which plays a very important role in the improvement of air quality. With people's higher and higher requirements for people's quality of life, the future development space of air purifier will be relatively broad.

3. Industry standards drive the healthy development of industry norms

In 2018, the country issued the relevant air purification energy efficiency limit value and energy efficiency level, but also stipulated the air purifier energy efficiency limit value and energy efficiency level, the document issued the air purifier with energy efficiency identification, in order to be able to better help consumers to choose and buy, consumers will be more confident in choice. The requirements of relevant national industry standards provide very good conditions for the healthy development of the industry.

4. The introduction of new products and new functions has accelerated the improvement of the industry's market capacity

Now people's awareness of environmental protection is gradually enhanced, for the indoor environment has a higher requirements, more yearning for a comfortable and healthy environment. But with the development of the Internet with big data, intelligent home into people's life, with humanization and operation, simple and many other advantages, has won the favor and recognition of consumers. Nowadays, the air purifier has also begun to develop in the direction of intelligence, which not only shows the good purification effect, but also can better improve the user experience. With the emergence of new products and new functions, the sustainable development of the whole industry has been guaranteed, which naturally promotes the improvement of the market capacity of the industry.

5. The industrial policy support to provide a better environment for its development

Air purifier is able to improve the quality of air, as a relatively common electrical product, can provide consumers with a healthy and comfortable home environment, has been strongly supported by the relevant national policies. It is even called an air cleaner, which is the product of energy efficiency star, and it is also strongly recommended to provide a better external environment for the development of its industry.