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Diener Partner AG Treuhand und Recht 

Winterthur · Since 1985

Diener Partner AG Treuhand und Recht provides tax, fiduciary and legal services as well as real estate administration and property sales mandates. Services include tax consulting, accounting and financial statements, payroll and social security filings, estate and corporate law advice, and property management and sales.

Digital Business Schweiz GmbH 

Winterthur · Since 2018

Dimensione DeSimone GmbH 

Winterthur · Since 2023

DIMIX Power GmbH 

Winterthur · Since 2023

The core activity of DIMX Power GmbH is the provision of services in the construction sector, particularly in the areas of: dry lining, thermal insulation, acoustic insulation, system building, dry construction and light construction, plastering and wet plastering, crack and plaster renovation, decorative fine plastering and spackling techniques, and cooling and heating ceilings (interior insulation). The company thus offers a wide range of services focused on the maintenance, renovation and modernization of buildings.

Dionisio Consulting GmbH 

Winterthur · Since 2004

The core activity of Dionisio Consulting is management consulting, particularly in the area of digital transformation of companies. The company supports its customers in successfully mastering digital transformation processes by bringing in strategic industry knowledge and many years of experience.

Diversity Job Group GmbH 

Winterthur · Since 2013

The core activity of Diversity Job Group is the operation of diversity job boards aimed at promoting diversity and inclusion in the labor market. The company offers various platforms, such as 50plus-Jobs, Mama-Jobs, LGBTI-Jobs, Papa-Jobs and Praktikumsstelle.ch, to bring together employers and applicants and enable discrimination-free job placements.

DK Design GmbH 

Winterthur · Since 2024

The core activity of DK Design GmbH is the creation of technical building drawings and models, particularly in the field of high-rise construction, using CAD and BIM technologies. The specific services include: CAD services, BIM modeling, creation of excavation plans, and creation of formwork, reinforcement and excavation plans for high-rise buildings based on 3D models. The company offers these services specifically for the Swiss market, taking into account Swiss standards.

dlab GmbH 

Winterthur · Since 2004

The core activity of dlab GmbH is the development of products and solutions in the field of digital signal processing (Digital Signal Processing), particularly for the Aerospace, Audio and Data Science industries. The company provides engineering services, develops its own products such as audio codecs, beamformers and touchscreen solutions, and works on projects in the field of space research and the development of measuring instruments for solar energy.

DLS-Anlagenbau GmbH 

Winterthur · Since 2008

The core activity of DLS-Anlagenbau GmbH is the planning, installation and maintenance of ventilation and air conditioning systems for commercial, industrial, public institutions and residential buildings. This also includes services in the fields of plastics technology and environmental control. The company offers customized solutions for optimal climate, combined with efficiency and state-of-the-art technology.

DMG MORI Sales and Service Holding AG 

Winterthur · Since 2011

DMG MORI Schweiz AG 

Winterthur · Since 1968

DMS Performance GmbH 

Winterthur · Since 2020

The core activity of DMS-Performance GmbH is the planning, pre-fabrication, assembly and maintenance of fire extinguishing systems and fire protection systems, including the installation of security doors and gates, fire compartments and separation closure systems.

dogtalent Sahebi Masood 

Winterthur · Since 2016

The core activity of the company "Mike's dogtalent Hundeschule Winterthur" is the implementation of dog training and courses, in particular puppy and education courses as well as puppy training. The company also offers a dog area that can be rented.

Dominik Krämer 

Winterthur · Since 2014

Dominik Kulsen AG 

Winterthur · Since 1998

The core activity of KULSEN & HENNIG is the trade in natural-coloured diamonds, particularly the selection, sale and supply of goldsmiths, jewellers and jewellery manufacturers in Switzerland and the European Union.

dragonPharm GmbH 

Winterthur · Since 2012

The core activity of dragonPharm GmbH is the provision of pharmaceutical services, particularly in the areas of prevention, therapy and development. The company is committed to providing easy access to healthcare, disseminating knowledge and ensuring a sustainable pharmaceutical and medical basic care.

Drehpunkt Beratung GmbH 

Winterthur · Since 2019

The core activity of the company "Drehpunkt Beratung" encompasses coaching, organizational development and supervision.

Dr. Felix Bertschinger AG 

Winterthur · Since 2023

Dr. Felix Bertschinger AG is a dental practice offering a comprehensive range of dental services from prophylaxis to complex procedures. Services include dental hygiene, individualized treatment planning and digital diagnostics including 3D X‑ray; care is also provided for children, people with disabilities and anxious patients, with emergency appointments available.

Dr. Herbert Jucken Strategieberatung und Interimsmanagement 

Winterthur · Since 2011

The company's core activity is strategy consulting and interim management, particularly in the healthcare sector. The company offers services such as developing strategic concepts, implementing projects, moderating workshops, and conducting check-ups and business reviews. Additionally, the company assumes interim management tasks to manage crisis situations, initiate transformations, or establish new business areas.

Dr. Hermann Schmidhauser Stiftung 

Winterthur · Since 2020

The core activity of the Dr. Hermann Schmidhauser Foundation is the promotion of institutions and projects with charitable objectives as well as sports clubs in Winterthur and its surroundings through the granting of subsidies.