NEW YORK (

TheStreet

)

-- Polypore International

(NYSE:

PPO

) has been upgraded by TheStreet Ratings from hold to buy. The company's strengths can be seen in multiple areas, such as its revenue growth, impressive record of earnings per share growth, compelling growth in net income, expanding profit margins and good cash flow from operations. We feel these strengths outweigh the fact that the company is trading at a premium valuation based on our review of its current price compared to such things as earnings and book value.

Polypore International, Inc., a technology filtration company, develops, manufactures, and markets microporous membranes used in separation and filtration processes. It operates in two segments, Energy Storage and Separations Media. Polypore International has a market cap of $2.2 billion and is part of the

industrial goods

sector and

industrial

industry. Shares are up 38.8% year to date as of the close of trading on Thursday.

You can view the full

Polypore International Ratings Report

or get investment ideas from our

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.

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