water purifiers in China will reach 7.983 million units, a year-on-year increase of 2.0%, and the growth rate will decline. This is caused by the supply side's feedback from the change trend of inventory and the adjustment of output growth rate.

From the perspective of demand side, from 2015 to 2019, the sales volume of water purifiers in China shows an increasing trend year by year. In 2019, the sales volume of water purifiers in China will reach 18.278 million units, a year-on-year increase of 2.1%, and the growth rate will decline slightly.

The change of retail sales of water purifiers is also very similar. According to the data, from 2013 to 2018, the retail sales of water purifiers in China showed an increasing trend year by year, but the growth rate also decreased year by year. In 2018, the retail sales of water purifiers in China was 31.69 billion yuan, a year-on-year increase of 17.4%; From January to November in 2019, the retail sales of water purifiers in China will be 28.49 billion yuan.

Overall, the supply and demand of water purifier industry is relatively balanced. From 2015 to 2019, the production and marketing rate of the industry is about 99%, and the industry production and marketing convergence is good. In 2019, the production and sales rate will be 99.5%. The operation of water purifier market is relatively stable.

In the future, water purifier will become the same necessities as mobile phone and computer. It is estimated that in the next few years, the domestic domestic domestic water purifier industry will still maintain a rapid development of more than 20%, and the market scale of domestic water purifier will be about 13 million by 2021.

In the first and second tier cities, consumers' awareness of water purifiers has reached 62%, and 45% of them have the intention to buy water purifiers in the next year. From the perspective of brands, domestic brands have improved. According to the age of the consumers, the consumers of water purifiers are mainly 30-39 years old, accounting for 56%, followed by 20-29 years old, accounting for 21% of the total.

Green environmental protection water purifier is more and more respected by people, especially with the improvement of national quality, the environmental protection awareness of energy saving is more and more strong, coupled with water pollution, haze, automobile exhaust, formaldehyde and other direct threats, people pay special attention to the environmental protection and health function of water purifier.

The regional water quality in China is obviously different, which requires manufacturers to design products suitable for different regions according to the water quality characteristics of different regions, instead of using the same process of water treatment as most manufacturers in the market.

On the whole, although the market scale of water purifier industry is growing at a high speed, compared with the household penetration rate of European and American countries, it is still low. With the enhancement of consumption ability of consumer groups and the improvement of national quality of life, it has laid a foundation for the development of water purifier industry. It can be seen that the market space of water purifier industry in China is huge.