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ZOLT
  Zoltek Companies, Inc. - NASDAQ

9/2/2014, 4:41 PM ET
ZOLT is defunct since February 28, 2014. Merged with Toray
Company Description
Zoltek Companies, Inc manufactures carbon fiber. In addition, it produces an intermediate product, a stabilized and oxidized acrylic fiber used in flame- and heat-resistant applications which it sells under the Pyron trade name.