Condition of water resource in China is grim water purification equipment is particularly important 【 3 m filter.

7 Chinese size river total length of 420000 kilometers, the lake. 56 square kilometers, accounting for land area 0. 8%, water resources total 2. 8 trillion cubic meters and 2300 cubic meters per capita, only accounts for a quarter of the world per capita in 121, is one of the 13 PinShuiGuo. At present there are more than 300 640 Chinese cities lack water, 2. 3. 2 billion people to a serious shortage of annual water consumption.

according to the UN's prediction of the 21st century will become the global crisis's first water crisis. Population growth geometry, modern the indiscriminate discharge of industrial wastewater and municipal waste, rural pesticide spraying and so on, already is little shortage of freshwater resources intensifies, cannot be used. Filter filter according to statistics, at present the water pollutants has reached more than 2000 ( 2221). Mainly for organic chemicals, carbide, metal, among them there are 765 species (tap water 190 kinds of harmful to human body, 20 kinds of cancer, 23 kinds of suspected cancer, promote cancer, 18 species of 56 kinds of mutagenic: tumor) 。

according to incomplete investigation shows that the emissions about 30 billion tons a year. In major cities across the country groundwater pollution of different degrees. Article 54 of the national 78 major rivers are polluted. China's seven major river systems: the Yangtze river, pearl river, the songhua river, the Yellow River, huai river, hai river, liao. 7 major water systems in the half of the river is polluted, 86% of urban river pollution, serious to have: the Yellow River, huaihe river, liao river, tai lake, chao lake, dianchi lake, such as rivers and lakes.

in our country, stainless steel filter only less than 11% of the people drink the water conform to the hygiene standards in our country, and as much as 65% of people drinking turbidity, bitter alkali, fluoride, arsenic, industrial water pollution, and infectious diseases. 200 million people drinking tap water, 70 million people drinking high fluoride water, 30 million people drink water high nitrate, 50 million people drinking high fluoride water, 1. 100 million people drink high hardness water.

the lack of fresh water resources has become one of the bottlenecks restricting the development of the national economy, especially of the northern area. While China is more become one of the countries of the United Nations recognized the lack of fresh water resources. To solve the problem of objective reality, open source throttling became one. In open source, the country has been in a lot of do not hesitate to spend large sum of money to solve this problem, such as the implementation of seawater desalination project, regional water resource balance of south-to-north water transfer project, and so on. But as an individual's social citizens, and protection of water resources, saving water is our responsibility and obligation.