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Ahlstrom Corporation, a global high-performance materials company, has completed
the acquisition of a 49.5% stake in Porous Power Technologies, LLC. The U.S.-
based company develops technology for lithium-ion battery separators. Ahlstrom
has an option to acquire the remaining shares at a later stage.
Ahlstrom, together with Porous Power, will be offering a new generation of
separator solutions for safer batteries and capacitors in electric-drive
vehicles, e-bikes, portable electronics and utility-grade storage products.
Porous Power's current separator products are already being evaluated by battery
manufacturers around the world. The products for electric vehicles will be
commercially available in larger scale later.
The transaction was announced on December 12, 2011.
For more information, please contact:
Juho Erkheikki
Manager, Financial Communications & IR
Tel. +358 10 888 4731
Seppo Parvi
Tel. + 358 888 4768
Ahlstrom in brief
Ahlstrom is a high performance materials company, partnering with leading
businesses around the world to help them stay ahead. Our products are used in a
large variety of everyday applications, such as filters, wallcovers, flooring,
labels and food packaging. We have a leading market position in the businesses
in which we operate. Our 5,700 employees serve customers in 26 countries on six
continents. In 2010, Ahlstrom's net sales amounted to EUR 1.9 billion. The
company's share is quoted on the NASDAQ OMX Helsinki. More information available
About Porous Power
Porous Power Technologies ( and makes electrode separators that reduce the cost
and improve the safety, performance, efficiency and life of lithium-ion
batteries, particularly large-format cells for electric vehicles, stationary
power and consumer electronics applications.

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