Zoltek Companies, Inc. develops, manufactures and markets carbon fibers for commercial applications. The Company’s operations consist of two business segments. In addition to its carbon fibers business unit, its technical fibers business unit develops, manufactures and markets carbon content fibers and oxidized acrylic fibers used in aircraft brake manufacturing and other heat-resistant and flame-resistant applications. The Company sells its carbon fibers under the Panex trade name and its oxidized acrylic fibers under the Pyron trade name. The Company’s product applies in variety of industries, which includes wind energy, deep sea drilling, aerospace secondary structures, automotive and aircraft brakes.