Polypore International, Inc., a technology filtration company, develops, manufactures, and markets specialized microporous membranes used in separation and filtration processes. It operates in two businesses, Energy Storage and Separations Media. The Energy Storage business offers membranes that provide the function of separating the cathode and anode in various battery markets, including lithium batteries that are used in portable electronic devices, cordless power tools, electric drive vehicles, and energy storage systems; and lead-acid batteries used in automobiles, other motor vehicles, forklifts, and uninterruptible power supply systems. The Separations Media business provides membranes that are used as filtration element in various medical and industrial applications, such as hemodialysis, blood oxygenation, plasmapheresis, and other medical applications, as well as various high-performance microfiltration, ultrafiltration, and gasification/degasification applications. Polypore International, Inc. sells its products to manufacturers and converters that incorporate its products into their finished goods. The company sells its products and services in North America, South America, Europe, and Asia through its direct sales force, and distributors and agents. Polypore International, Inc. is headquartered in Charlotte, North Carolina.

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