Mats Helmer Stefanus Gabrielsson

Petrogrand AB is a holding company, which engages in the exploration and production of oil and gas. The firm offers management and refining of oil assets. The company was founded in April 2005 and is headquartered in Stockholm, Sweden.

TPC Components AB operates an investment casting foundry. The private company is based in Hallstahammar, Sweden.

Golden-Cut Yachts AB manufactures and designs yachts & boats. It offers retro-inspired wooden boat and its price is comparable to plastic boat of the similar size. The company was founded by Richard Granberg in 2007 and is headquartered in Västervik, Sweden.

City Dental i Stockholm AB provides dental services. It offers check-ups, fillings, emergency dental care, dental hygiene treatment, crowns and bridges, implants, and veneers. The company was founded by Mattias Santesson in 2005 and is headquartered in Stockholm, Sweden.

Intressenter AB provides investment services.

Student Competitions AB organizes online competitions. It develops free online platform that allows students and young professionals to gather, find, and apply for global competitions, events, challenges, and opportunities to participate in various fields of interest or study. The firm specializes in organizing and marketing global, regional, or local competitions for connecting the global supply of talents with local demand. It connects students with opportunities and provides organizations with competition-related services. The company was founded by Sven Gustav Alexander Borgefalk, Chu Zhu, Niklas Lars Jungegård, and Johan Robert Lyngman in 2009 and is headquartered in Stockholm, Sweden.

Rapid Säkerhet AB is a security company based in Sundbyberg, SE. Rapid Säkerhet AB offers a range of security solutions for various industries, including camera services, personal alarms, safety analysis, risk assessment, and surveillance. Rapid Säkerhet AB is certified with ISO9001 and is a member of Goodsport, a non-profit foundation that supports young people's sports activities. The Swedish company also provides services such as receptionist, disturbance calls, and opening and closing assistance. The private company's services are available nationwide in Sweden. The company was founded in 1985 and is led by CEO Mats B Adman.