Robert M. Klawonn

TPC Group, Inc. engages in production of value-added products derived from niche petrochemical raw materials such as C4 hydrocarbons. It sells products into a specialty and intermediate markets, including synthetic rubber, fuels, lubricant additives, plastics and surfactants. Its products include butadiene, butane-1, fuel products, polyisobutylene, isobutylene derivative, propylene tetramer and pentamer. The company was founded in 1943 and is headquartered in Houston, TX.

Draka Holding NV manufactures electrical and special purpose cables. The company was founded by Jan Teewis Duyvis in 1910 and is headquartered in Delft, the Netherlands.

Domaille Engineering engineering and manufacturing services. It offers contract LLC provides precision manufacturing, engineering solutions, optical fiber polishing fixtures and optical fiber polishing machines. The firm serves the defense, aerospace, telecommunications, medical and fluid technology industries. The company was founded by Nancy J. Domaille and Michael D. Domaille in 1990 and is headquartered in Rochester, MN.

Associated Cables Pvt Ltd. manufactures instrumentation cable. It also manufactures copper control cables, thermocouple cables, fire resistant cables and special application cables. The company was founded in July 1973 and is headquartered in Mumbai, India.

Dura-Line Holdings, Inc. manufactures and distributes communication and energy infrastructure products and systems. Its products include conduit, cable-in-conduit, pipe, and accessories. The company was founded in 1971 and is headquartered in Knoxville, TN.

Part of Prysmian SpA, Singapore Cables Manufacturers Pte Ltd. is a private company that manufactures rope, cable, cordage, twine, and related products. Singapore Cables Manufacturers Pte Ltd. is based in Singapore, Singapore.

Onward Capital LLC (Onward Capital) is a private equity firm founded in 2015 by Marcus J. George and Laura L. Lester. The firm is headquartered in Skokie, Illinois.