Gopani products systems [gps] provides pleated polypropylene filter cartridges in normal efficiency. This nominal polypropylene pleated cartridges are premium depth type filter available in 1 to 20 microns retention ratings. These pleated polypropylene filter cartridges are useful for removing particles in aqueous and non-aqueous liquids. These pleated cartridge filters are an ideal substitute for string wound or spun molded filters. The filter media of these pleated polypropylene filter cartridges is created from continuous self-bonded melt blown polypropylene micro fibers. These polypropylene micro fibers are manufactured by unique process controlling uniformity and density of continuous micro fibers. The pleated polypropylene filter cartridges contain no resin binders resulting in elimination of the chances of leaching out during service. The filter matrix of fine diameter fibers and large open area of these pleated polypropylene filter cartridges allow flow rate at low-pressure drop.