Holger Hans-Jochen Ruckstuhl

Dowding & Mills Ltd. provides electrical, calibration, and electronic engineering services. The firm refurbishes electrical equipment such as generators, pumps, and gearboxes. It serves the food processing, metals, petrochemicals, and telecommunications industries. The company was founded on November 21, 1919 and is headquartered in Birmingham, the United Kingdom.

Castle Support Services Plc operates as an investment holding company with interest in electro mechanical maintenance. Its operations include power generator and electric motor repair, mechanical repair, mechanical and electrical site work, condition monitoring services, electronic and calibration services. The company was founded on February 3, 2005 and is headquartered in Birmingham, UK

Part of Sulzer AG, Sulzer (UK) Holdings Ltd. is a holding British company with interests in mechanical maintenance and repair services. The company is based in Leeds, UK and was founded in 1997.

Sulzer Electro Mechanical Services UK Ltd. provides electronic and engineering services. The company was founded on November 22, 1932 and is headquartered in Birmingham, theUnited Kingdom.

Part of Sulzer AG, P C Cox Ltd. is an investment holding British company. The company is based in Hungerford, UK. P C Cox was founded in 2009.

DM Technical Services Ltd. provides electric, power generation and mechanical repair services. The company was founded on November 17, 2005 and is headquartered in Leeds, the United Kingdom.