Josef Bölle

MANN+HUMMEL GmbH engages in the manufacture and development of air filtration systems. It specializes in air cleaners and intake systems, liquid filter systems, solutions for alternative drives, industrial filters, indoor air quality, fine dust eater, digital transformation, water treatment, waste water treatment, and membrane filtration for food and dairy products. The company was founded by Adolf Mann and Erich Hummel in 1938 and is headquartered in Ludwigsburg, Germany.

Duke University is an academic university that offers undergraduate, graduate and professional programs. It also has publications and research services. The university was founded in 1838 and is headquartered in Durham, NC.

Mann + Hummel Holding GmbH operates as a holding company with interest in developing and producing industrial filters and systems for the mechanical engineering and automotive industries. The company is headquartered in Ludwigsburg, Germany.

MANN + HUMMEL International GmbH & Co. KG operates as a management holding company. It acquires and manages businesses, which engage in the development, production, and distribution of metal and plastic products. These include filters and filter systems with applications in the automotive sector, as well as air filtration and water solutions for indoor, outdoor, cleanroom, and industrial applications. The company was founded on September 16, 2014 and is headquartered in Ludwigsburg, Germany.

Unternehmensgruppe Theo Müller SECS manufactures and distributes dairy products. It operates its businesses through its brands such as müller, SACHSENMILCH, Weihenstephan, Almof, Loose, TMA, Pragolaktos, Homann, NADLER, Lisner, NORD FISH, and polarica. The company was founded by Ludwig Müller in 1896 and is headquartered in Luxembourg.

Volksbank im Harz eG is a state chartered commercial bank based in Osterode am Harz, Germany.

HuT Heiz- und Trocknungsanlagen GmbH is a German company that leases construction machinery and equipment. The private company is based in Naunhof, Germany. The CEO of the company is Benjamin Schmittgall.

Bautrocknung Schmittgall GmbH provides damage restoration services. The company is headquartered in Leipzig, Germany.

Hestia Instandsetzung Management GmbH is a German company that specializes in handling the renovation of properties that have been damaged by water, fire, or mold. The private company is based in Munich, Germany. The company offers expert services to manage the complete handling of the renovation process, allowing customers to report their damage to their insurance and leave the rest to the professionals. The company was founded in 2019, and the CEOs are Max-Otto Griesam and Paul Odefey.