Business, wealth, opportunities must be seized, and it is predicted that the next flood of business after the it industry will be healthy, environmentally friendly. The high rate of economic development has led to high levels of environmental pollution, particularly water pollution. There are widespread threats to water security in urban and rural areas. Water purification plants have emerged, and there are two major disadvantages in the current market: the price of water purification units is too high to be absorbed by ordinary people at a mere one or two thousand dollars; and the quality of water purification systems, which are priced for hundreds of dollars, is too rough and too simple. Is there a product that is good and affordable and suitable for ordinary household consumption? It's a clean water purification machine! (c) the introduction of international advanced two-storey water purification technologies (a: ceramic core, patent no. 95102519. 8 b: nanokdf, patent no. 2006100...