How many people in Weimo Decor R&D department?

Underground Deep well cement sand filter, which is of good quality? The filter suitable for filtering underground deep well water mainly depends on whether the filter medium and the filtering accuracy can meet the demand,Choose sediment filters to find production enterprises as much as possible,On the one hand, the quality is guaranteed;

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Why can the hepa filter of the vacuum cleaner be washed and the air purifier not work? 1.Different materials,In fact, HEPA can't be washed,The materials of the foreign industrial vacuum cleaner HEPA are mostly blended with glass fiber, polyurethane and other materials,Water washing will have a certain impact on the material,Originally, HEPA did efficient filtering,Washing will reduce the accuracy,Therefore, it is not recommended to wash water (it is not excluded that some HEPA that can be washed is not HEPA at all,BIA certification certificate can be requested for verification ).2.There is a paper filter for air purification,After washing, it will deform,Lose precision.HEPA precision H14 standard (BIA certification): 0.3 micron filtration efficiency D.O.P99.999%, 0.18 Micron D.O.P99.95%,Compared with the general air purification filter HEPA accuracy is higher.3.Other industrial vacuum cleaners (imported,The warranty machine has not found credible relevant data at present. the configuration filter is mostl