Mathias Prüssing

ISP Electro Solutions AG engages in the planning, implementation, and maintenance of electrical, heating, ventilation, air conditioning, refrigeration, and plumbing solutions. The company was founded in 1998 and is headquartered in Ostermundigen, Switzerland.

Jaggi & Rieder AG engages in the provision of installation services for sanitary, heating, ventilation, and air conditioning systems in houses, hotels, and commercial establishments. It also offers consulting, planning, repair, and maintenance services. The company was founded on February 20, 1990 and is headquartered in Saanen, Switzerland.

Quickline Holding AG engages in the acquisition, holding, management, and disposal of participating interests in companies. It also provides management and financing services to group firms. The company was founded on January 23, 1998 and is headquartered in Nidau, Switzerland.

Aerovent Service SA is a Swiss company that specializes in ventilation, air conditioning, and energy recovery installations. The private company was founded in 2001 and is based in Villars-Sainte-Croix, Switzerland. The company offers cooling installations for crafts, trade, and industry, refrigeration and air conditioning equipment, and distribution of cold (cooling ceilings/TABS). The company also provides troubleshooting management and on-call service. Aerovent Crissier SA and Aerovent Service have been providing these services since 1989. It is ultimately controlled by the State of Bern.

BKW Building Solutions AG engages in the planning, implementation, and maintenance of building, information, and communications technology for household, as well as commercial and industrial buildings. It specializes in electrical, solar, heating, ventilation, air conditioning, refrigeration, and plumbing systems. The company was founded on December 5, 2014 and is headquartered in Ostermundigen, Switzerland.

Infonet Schweiz AG provides communication and network services. The private company is based in Bern, Switzerland. The Swiss company is a subsidiary ultimately controlled by the Government of Switzerland. Infonet Schweiz was acquired by Swisscom AG on November 14, 2007 for $0.44 million.

Comfone Ltd is a Swiss company that provides roaming solutions since 1997. The private company is based in Bern, Switzerland and ultimately controlled by the Government of Switzerland. The company is industry pioneers, delivering borderless and easy communications. Comfone is celebrating 25 years of success, independence, reliability, and neutrality. The company's offering includes both sponsored and sponsoring counterparts for Sponsored Roaming to increase roaming coverage. Comfone utilises Big Data to create unique solutions such as identifying silent roamers, monitoring permanent roamers, segmenting the audience, and detecting sponsored roaming. Markus Sager has been the CEO of the company since 2010. Comfone was acquired by Swisscom AG from Vodafone AirTouch Plc on September 20, 1999.