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composite filter element employs at least one layer formed by a collection of bile through metal wires and wire fabric or knitted plasti ca and at least one layer of nature only metallthe at least one of these layers to the meabili being equipped with shear and pleated and waves
composite filter element employs at least one layer formed by a collection of bile through metal wires and wire fabric or knitted plasti ca and at least one layer of nature only metallthe at least one of these layers to the meabili being equipped with shear and pleated and waves