... CARTON SIZE39*39*28 cm20ft container loading15865pcs40HQ loading38125pcsHow to washUse a piece of sandpaper to brush the surface, till the surface is ... )FunctionRemove dust, rust, cyst, cryptosporidium, guardian, particle and sediment contaminants. Remove harmful bacteria such as E.Coli, fecal coli form, salmonella ...