What material is air cotton? Air cotton is called Air filter cotton,It is mainly used to filter dust particles in the air.Air filter cotton is divided into non-woven fabrics according to the difference in material,Synthetic fiber filter cotton, fiberglass filter cotton, activated carbon filter cotton, synthetic fiber high temperature filter cotton, etc.Air filter cotton can be divided into: Initial (coarse) effect according to the national standard (GB/T14295,In effect,Efficient,It can be divided into: G1, G2, G3, G4, F5, F6, F7, F8 according to European standards.The primary (coarse) filter cotton mainly filters dust particles larger than 5 μm,Generally used for ventilation equipment and air control system suction entrance as a direct contact with outdoor air such as pre-filtration or coarse filtration;Also used for plate filter,Folding plate filter,Filter material of filter equipment such as bag filter.The medium-effect filter cotton mainly filters dust particles larger than 1 μm,Generally used for seconda
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How much water purifier? There are also many types of products. The most important thing is to choose a qualified brand product (with qualified inspection reports and health permit approvals ).The structure of the water purifier is different, and the water purification effect is different. Generally speaking, the first-class filter water purifier is simple in structure, mainly activated carbon, and its filtration capacity is limited. it can only be used for coarse filtration. the filtered water is best heated and boiled for drinking. Most of the first-class filter water purifiers belong to low-grade water purification products, each selling price between more than a dozen yuan and 150 yuan.Multi-Stage filter water purifier. This water purifier has two levels of coarse filtration and a set of fine filtration, and the fine filtration is mostly made of hollow fiber filter elements. the filtered water can be directly drunk. The multi-stage filter water purifier belongs to the mid-range water purification pro
