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Grünmatt AG 

Winterthur · Since 2005

The core activity of Grünmatt AG is the development and management of residential complexes, in particular the construction and rental of apartments.

Grünwerk-Mensch & Natur 

Winterthur · Since 2000

The core activity of the Grünwerk association is nature conservation and environmental education. The association is committed to preserving and promoting biodiversity by carrying out activities such as planting and maintaining wild shrub hedges and high-stem fruit trees, promoting and maintaining light forests, combating invasive neophytes, and managing dry and reed meadows. In addition, the association offers environmental education programs for children, young people, and adults to promote competencies and awareness for nature conservation.

GSK Leckortung GmbH 

Winterthur · Since 2022

The core activity of GSK Leckortung is the execution of roof analyses, leak detection and roofing work for all types of roofs, particularly for flat roofs of industrial facilities, exhibition and fair buildings, workshops, school buildings and other new or renovated buildings. This also includes roof maintenance and inspections, renovation work, roof cleaning, replacement of gutters, retrofitting of fall protection systems and the installation of roof windows.

GÜNTHARD. POLITUMSETZUNG GmbH 

Winterthur · Since 2009

The core activity of Günthard. Politumsetzung GmbH is the consulting and support of organizations and individuals in the areas of political communication, leadership and communication concept development. The company offers services such as strategy consulting, communication concept development, lobbying, campaigning, media work and leadership support. It targets administrations, public institutions, private companies and people in leadership positions who need support in communication and leadership.

GUT-zusammenleben GmbH 

Winterthur · Since 2020

The core activity of Gut-zusammenleben GmbH is to advise and support individuals and organizations in developing conflict management, communication, personality development, and teamwork, with the goal of promoting well-being and cooperation in private, social, and professional contexts.

H2A raum für ideen ag 

Winterthur · Since 2020

The core activity of H2A is the planning, design and realization of future-proof work environments and interior spaces for companies. This includes services such as needs analysis, space planning, interior construction, furnishing, lighting and acoustic planning, as well as project management. The company supports customers in creating modern, flexible and motivating work environments that meet the needs of employees and the company culture.

HaFa Group AG 

Winterthur · Since 2021

The core activity of HaFa Group AG includes the execution of renovations, new constructions, roofing, facades, insulation and painting work. The focus is on providing services in the field of construction and building maintenance, including specialized painting services through the painting company 'Maler Express 57'.

Hahnloser/Jaeggli Stiftung 

Winterthur · Since 1980

The company's core activity is the preservation, presentation and promotion of art and culture, particularly through the management and exhibition of the Hedy and Arthur Hahnloser collection, as well as supporting the Kunst Museum Winterthur and the museum association.

Hälg & Co. AG, Zweigniederlassung Winterthur 

Winterthur · Since 2009

Hälg & Co. AG, Zweigniederlassung Winterthur designs, installs and maintains building services systems. The branch provides plant engineering and service for heating and cooling, ventilation and air‑conditioning, and sanitary systems, and manages renovations and industrial installations from planning through maintenance.

Halt auf Verlangen GmbH 

Winterthur · Since 2021

Halt auf Verlangen GmbH provides social-pedagogical support and outreach family work to accompany families, young people and individuals in crisis and everyday situations. Services include social-pedagogical family support, youth coaching, parental counselling, supported visitation, reintegration support, crisis intervention and animal-assisted accompaniment.