How to choose the BWT water purifier? BWTWBT pre-water purifier purchase method1. there must be approval for wadingAccording to China's relevant regulations, manufacturers who produce or sell water purifiers must obtain a water-related sanitation license approved by the superior health supervision department, and each brand and each model of water purifiers have only one sanitary license batch number. Before purchasing, you must let the sales merchant show the approval of the water-related sanitation license.2. choose the backwashing filter as much as possibleThe front filter can be divided into stacked filter, flush filter, siphon filter, backwashing filter and floor heating front filter according to the working principle. According to the working principle, the front filter that is most suitable for home at present should be a backwashing filter.The working principle of the backwashing filter is: when the filter needs to flush the trap, manually or automatically reverse the flow of water by ad
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The inner cylinder material of the washing machine is made of nano-materials. can it be antibacterial? Introduction: mention the word 'nano,Many people may have heard of it,But what is nano,What is nano-material,It may not be clear to many people,This paper mainly introduces the research status and development prospects of nano-and nano-materials,I believe that with the development of science and technology,There will be more and more nano-materials coming into people's lives,For the benefit of mankind.Nano is the translation of English namometer,Is a unit of measure in physics,1 nano is one billion of 1 m;Equivalent to the length of 45 atoms arranged.Generally speaking,Equivalent to the thickness of one in ten hair.Like mm, Micron,Nano is a scale concept,There is no physical connotation.When the material reaches the nano scale,It's about 1-This range of 100 nm,The performance of the substance will change,Special performance appears.This one is different from the original atoms and molecules,Mate
