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SILVACONSULT AG 

Winterthur · Since 1999

The core activity of Silvaconsult AG is the development and application of methodologies and standards for sustainable forestry, climate protection and nature conservation, particularly in the area of certification of forest projects aimed at preserving and promoting carbon sinks, biodiversity and forest resilience.

Silverlight AG 

Winterthur · Since 1982

The core activity of Silverlight Ltd. is the development, manufacture and distribution of pyroelectric detectors, giga-/teraohm resistors and related products such as optical filters and windows. The company also provides engineering services to support customers in integrating these products into their applications.

SIMA / BREER GmbH 

Winterthur · Since 2017

SIMA / BREER GmbH is a landscape architecture office offering services in landscape planning and urban design. The team develops design proposals, competition submissions and site planning for public and private projects.

Simkas AG 

Winterthur · Since 2007

Simkas AG is a real estate company with a core competency in property development. The firm develops building projects from conception through leasing, invests in residential and commercial properties, and manages portfolio and property operations.

SimplexDNA AG 

Winterthur · Since 2021

The core activity of SimplexDNA AG is the implementation of molecular biological analyses and research projects in the field of biodiversity and nature conservation, particularly in the monitoring of invasive species and the evaluation of renaturation and revitalization efforts in freshwater ecosystems.

Simplify Group Switzerland GmbH 

Winterthur · Since 2024

Sinixt GmbH 

Winterthur · Since 2008

The core activity of Sinixt GmbH encompasses three main areas: 1. **ICT Consulting & Business Consulting**: Strategic ICT planning, efficient and cost-optimized use of ICT resources, expert advice, technology scouting, management support, and system and network architectures. 2. **ICT Security & Risk Management**: Security consulting, risk management, business continuity management, emergency exercises, training, and coaching for ICT security, SWOT and risk analyses, as well as security analyses of company networks. 3. **Accounting and Personnel Administration**: Financial accounting, budget consulting, tax returns, liquidity planning, administrative accounting clarifications, and HR administration. Overall, Sinixt GmbH offers comprehensive services in the areas of information and communication technology (ICT), security and risk management, as well as financial and personnel management.

sinndrin genossenschaft 

Winterthur · Since 2013

sinndrin genossenschaft is a platform that handles administrative tasks for its members, including bookkeeping, invoicing and management of social insurance, allowing members to focus on their projects. It administers collective social insurance and sick‑pay, manages payment monitoring and debt collection, and provides infrastructure, networking and support for project planning, consulting and implementation.

Sinomed Winterthur AG 

Winterthur · Since 2005

Sinomed Winterthur AG is a clinic for Traditional Chinese Medicine (TCM) offering acupuncture, herbal therapy, laser acupuncture, moxibustion, cupping, Tuina massage and TCM diagnostics. The practice is part of the Sinomed group and provides patient information and a network of specialist partners.

Siteco Switzerland AG 

Winterthur · Since 2019

Siteco GmbH is a manufacturer of lighting solutions, offering a wide range of products and services in the field of lighting. The company's core activity encompasses the development, production, and distribution of indoor and outdoor lighting solutions, including specialized solutions for various industries and applications such as industry, logistics, office, city, retail, sports, and events. Additionally, Siteco also provides digital solutions, lighting control systems, and technical services.