Leon Garoufalis

Composites One LLC engages in the distribution of composite materials. It offers additives and fillers, advanced composites, advanced reinforcements, advance resins, core materials, equipment and parts, glass, polyurethane foams and elastomers, gel coats and pigments, initiators, polyster, prepregs, putty compounds, composite tooling materials, process consumables, and vacuum consumables. It serves aerospace, construction, consumer recreation, cultures marble, defense, industrial, infrastructure, marine, transportation, and wind energy and power industries. The company was founded in 1999 and is headquartered in Arlington Heights, IL.

Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.

GLS Corp. manufactures and distributes thermoplastic elastomer (TPE) compounds and alloys. TPEs are used in tools, pens, appliances, food packaging, personal care items, and sporting goods. The company's products include Dynaflex compounds, Dynalloy compounds, Versaflex alloys, Versalloy elastomer alloys, Versollan elastomer alloys, and Kraton compounds. GLS was founded by Steven L. Dehmlow in 1979 and is headquartered in McHenry, IL.