ECO-DL of the surface and depth filtration provides fibers a long Lenticular filter cartridge with depth filter sheets,multi options diameters and micron ratings.Thefilter media hasa fixed pore construction of high quality the combination life time. Due to use of the premium quality filter fabrics,the depth filter cartridges have superior flow characteristics with very lowwith very low pressure drop compare to normal depth media of similar micron rating, the large filtration area have a high dirty-holding capacity and save the cost.