Any good brands for handheld pc ?

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What are the liquid filtration materials? Good wear resistance of polypropylene,High elastic response rate,It is a good thermoplastic fiber,Polypropylene felt is commonly used in low temperature pulse filter bags in smelting plants and pulse filter bags in chemical and pharmaceutical factories.Polypropylene precision range: 0.1--500 Micron,Maximum temperature 94 degrees.Special polyester fiber has good performance at normal temperature,Is the main filter material in the bag filter.It can withstand the operating temperature of 130 ℃ under dry conditions;Working continuously above 130 ℃ will harden;Fade;Crisp hair,Temperature also weakens its strength.Precision Range: 1--300 Micron.PTFE is a neutral polymer compound with unique molecular structure, that is, completely symmetrical structure.The special structure gives it good thermal stability, chemical stability, insulation, lubrication and water resistance.High temperature resistance,Wide temperature range,Can be used continuously for a long time

How to write the self-report composition of water purifier? The water purifier is also called water purifier and water filter. Martin Aussdon, Germany, 1832)In the UK, the core of its technology is the filter membrane in the filter element device. The main technology of the water purifier comes from two kinds of UF membrane and RO reverse osmosis membrane, it is a small water treatment equipment for deep purification of water quality according to the requirements of water use. Generally speaking, the water purifier refers to a small filter used as a household.The water purifier can be divided into many kinds according to different purification principles and processes. Among them, RO reverse osmosis technology has the highest filtration accuracy (filtration accuracy is 0.0001 microns), since the pore diameter of the reverse osmosis membrane is only one in 100,000 of the diameter of the hair wire, only water molecules and dissolved oxygen are allowed to pass through, all the impurities contained in the wat