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R & M Consulting R. Müller 

Winkel · Since 1992

The core activity of R & M Consulting is the provision of consulting and trust services, particularly in the areas of corporate consulting, trust, accounting and taxation. The company offers comprehensive and competent services, including the preparation of tax returns, and is aimed at customers in the Zurich-North region.

Sanassist AG 

Winkel · Since 2013

The core activity of Sanassist AG is the comprehensive support of medical practices and clinics in Switzerland. This encompasses three main areas: 1. **Medical Products**: Sales and purchasing of new and used medical equipment. 2. **Medical Trading**: Procurement management and sourcing of medical products and services. 3. **Medical Services**: Consulting and support in the areas of marketing, communication, digitalization, and practice management, including startup support, physician marketing, practice management, and purchasing optimization. The company positions itself as an independent partner for medical institutions, supporting them in overcoming challenges in the healthcare sector and enabling them to focus on their core activity, patient care.

Sandbox Projects Baumanagement AG 

Winkel · Since 2021

SBC Lab AG 

Winkel · Since 2004

The core activity of SBC Lab AG is the development of safety-critical IT solutions for companies with data-intensive processes, particularly through the development of secure calculation algorithms and the provision of services such as consulting, coaching, training and secure cloud computing solutions.

sk consulting Susanne Kuntner Lorenz 

Winkel · Since 2007

SK Consulting is primarily engaged in personnel consulting and placement, particularly in the fields of real estate management and construction. The core activity involves supporting companies in their search and selection of suitable personnel and advising candidates in their search for suitable positions.

Solero Bräunungsstudios, Kuno Bühler 

Winkel · Since 2014

Solero Bräunungsstudios, Kuno Bühler operates tanning studios offering UV tanning sessions on various devices (e.g. Ergoline, megaSun, Collarium) with features such as collagen/red-light options and climate-controlled rooms. The website provides guidance on recommended tanning times, skin-type information and usage instructions.

sr projects GmbH 

Winkel · Since 2021

The core activity of sr projects gmbh is the individual planning and design of buildings, including architecture, construction management and BIM solutions (Building Information Modeling). The company offers services ranging from building permit to handover of the keys, thus covering the entire value chain in the construction industry.

SRS CONSULTING AG 

Winkel · Since 1979

The core activity of SRS Consulting AG is the consulting and support of companies, particularly in the areas of leadership, culture, personal development, succession planning, finance, strategy, governance, organization and management. The company offers a network of experienced consultants with many years of experience in leadership and consulting, who jointly process mandates and support companies in various challenges.

STUDIENTEAM AG 

Winkel · Since 2012

STUDIENTEAM AG develops and implements study concepts and provides services in real estate marketing, project management and organisational support. Its offerings include study design, study execution, property staging and marketing support.

sunlounger.ch gmbh 

Winkel · Since 2006

sunlounger.ch gmbh is a provider of outdoor advertising that operates a patented system of printed aluminium sunloungers and depot stations secured by deposit locks. The company sells and rents advertising space on textile surfaces and display panels at swimming pools and leisure sites, offers production, installation and maintenance services for advertisers, and supplies outdoor furniture, umbrellas and related accessories.

Sustainable Health AG 

Winkel · Since 2016

The Sustainable Health AG company is engaged in project management and innovative solutions for a sustainable and fair Swiss healthcare system.

S & W Baumanagement GmbH 

Winkel · Since 2023

The core activity of S&W Baumanagement GmbH is construction management, particularly the planning and implementation of construction projects such as new buildings and total renovations of residential buildings, for both private and commercial clients. This includes taking on tasks such as project planning, cost estimation, permit procedures, construction management and the coordination of company assignments.

Swissfly Aero GmbH 

Winkel · Since 2021

Swissfly Aero GmbH is an aviation company offering aircraft sales, inventory management and related services, including brokerage for buying and selling TBM aircraft, customer support, and product and safety information.

TecPacking Systems GmbH 

Winkel · Since 2015

TecPacking Systems GmbH is a specialist in packaging technology and process technology for the food and non-food industries. The company's core activity encompasses planning, consulting, project management, and implementation of customer-specific packaging and process technology solutions, including: gentle product conveying and size and optical sorting; primary packaging of powdered, piece, fresh, or frozen products in bags; secondary and end-of-line packaging of flexible and rigid packaging in cartons, trays, stacks, and plastic containers; and development and integration of packaging lines, including carton weighing systems, detection and ejection devices, and palletizers. The company also provides after-sales support and collaborates closely with partners such as KEY Technology, Prozesstechnik HEINEN GmbH & Co. KG, and CPS Case Packing Systems to develop efficient and sustainable solutions for its customers.

Touchpoints GmbH 

Winkel · Since 1965

The core activity of Touchpoints GmbH is the provision of marketing consulting services, particularly in the area of digitalizing customer contacts and optimizing marketing and sales processes. The company supports its customers in implementing marketing automation solutions, conversational marketing, CRM and CDP systems, as well as analyzing and improving customer ratings and experiences.

TransferAndo GmbH 

Winkel · Since 2024

TransferAndo GmbH provides chauffeur and passenger transfer services, including airport transfers, city‑to‑city transfers, hourly bookings, hotel transfers and limousine/special‑event services. The company operates a fleet that includes Mercedes and Tesla vehicles and offers online booking and contact options by phone and email.

twosix31 GmbH 

Winkel · Since 2023

Widmer Partner Immobilien AG 

Winkel · Since 2005

PST Aviation GmbH 

Winkel · Since 2025

AB Haustechnik GmbH 

Winkel · Since 2025

AB HAUSTECHNIK GmbH designs, installs and services heating, ventilation and air‑conditioning systems as well as other building services. The company provides energy‑efficient and sustainable solutions including rainwater utilisation and smart home integration, and offers consulting and maintenance from planning through implementation.