Here are the core activities of the companies:
1. Nuki: Development and manufacturing of intelligent access solutions for retrofitting, to replace physical keys.
2. Horizons: Strategic investments and participations in SME companies, particularly in the DACH countries.
3. Fortuna Group AG: Holdings and participations in companies in the sanitary industry, mechatronics, door/access systems, and networking and information technology.
4. (No specific company mentioned, but likely Fortuna Group AG or one of its subsidiaries): Water management, water treatment, and related areas.
5. Aquis Systems AG: Development, production, and distribution of innovative electronic solutions for sanitary technology in the public/commercial sector as an OEM manufacturer.
6. CONTI Sanitärarmaturen GmbH: Development and production of high-quality shower and washbasin fittings for public, semi-public, and commercial buildings, as well as for medical applications.
7. ACLARIS Water Innovations GmbH: Development and production of innovative water filter solutions.