Polypore International, LLC

Polypore International is one of the leading, high-technology filtration companies in the world that develops, manufactures and markets polymer-based microporous membranes used in separation and filtration processes. Its energy storage segment produces membranes that function as separators in lead-acid batteries used in transportation and industrial applications. The company s separations media segment produces membranes used in various health care and industrial applications, including hemodialysis, blood oxygenation, ultrapure water filtration and degasification. Polypore International operates Celgard, which is one of the leading companies engaged in developing, manufacturing and marketing battery separators that are used in the high-performance lithium battery markets in the world. The parent company maintains manufacturing facilities in the geographic markets of North America, Europe and Asia.