Polypore Shanghai Membrane Products Co., Ltd. is an American wholly invested company. Our headquarter is located in North Carolina State, USA. Polypore is a leading worldwide developer, manufacturer and marketer of highly specialized polymer-based membranes used in separation and filtration processes. Our products and technologies target specialized applications and markets that require the removal or separation of various materials from liquids, with such materials ranging in size from microscopic to those visible to the human eye. We manage our operations under two business segments: energy storage and separations media. We serve our customers globally with strategically located manufacturing facilities in the major geographic markets of North America, Europe and Asia. We have manufacturing facilities or sales offices in nine countries, such as America, France, Germany, Italy, Japan, Korea... serving six continents. website: www.polypore.net;                  www.celgard.com