N/a manufacturer / supplier in China, offering Gradient Density PP Sediment Filters 10-50μ M for Pre-Filtration in Municipal Water Treatment Plants, Best Price 20 Inch 0.2 Um Glass Microfiber Filter Cartridge for Gas Filtration to Remove Oil and Impurity, Wholesale Industrial Water Filtration Solution 10" 0.45 Micron Glass Microfiber Filter Element for Chemical Processing and so on.