Polypore International, Inc., a technology filtration company, develops, manufactures, and markets specialized microporous membranes used in separation and filtration processes. It operates in two segments, Energy Storage and Separations Media. The Energy Storage segment offers membranes that provide the function of separating the cathode and anode in applications, including lithium-ion batteries that are used in portable electronic devices, energy storage systems, cordless power tools, and electric drive vehicles; and lead-acid batteries used in automobiles, other motor vehicles, forklifts, and uninterruptible power supply systems. The Separations Media segment provides membranes that are used as high technology filtration element in various medical and industrial applications. This segment’s membranes and membrane modules are used in applications, such as hemodialysis, blood oxygenation, plasmapheresis and various high-performance microfiltration, ultrafiltration, and gasification/degasification applications. Polypore International, Inc. sells its products to manufacturers and converters who 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. The company is headquartered in Charlotte, North Carolina.