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Sierro Immobilier Sàrl 

Sion · Since 2016

Sigatec SA 

Sion · Since 2006

The core activity of Sigatec SA is the development and manufacturing of silicon microcomponents, particularly for the Swiss watch industry, but also for other sectors such as optics and aeronautics. The company offers solutions for the production of micro-pieces based on Deep Reactive Ion Etching (DRIE) technology and ensures that its products meet the requirements of the ISO 9001:2015 standard.

Sigma Ingénierie et Maintenance SA 

Sion · Since 1989

The core activity of Sigma Ingénierie & Maintenance SA consists of two main areas: 1. **Engineering**: The company provides engineering services, particularly in the fields of: * Design and planning of technical installations in buildings (heating, air conditioning, ventilation, plumbing, water treatment) * Development of energy concepts (heat, electricity, cold) including solar and geothermal systems 2. **Maintenance**: The company provides maintenance and repair services, particularly in the fields of: * Remote monitoring and control of technical installations * Preventive and corrective maintenance of technical installations in buildings and large power plants The company thus offers a combination of engineering services and maintenance and repair services to plan, install and maintain technical installations in buildings and industrial facilities.

Sion-Photo Sàrl 

Sion · Since 2002

The core activity of SION PHOTO is the development and processing of photographs, particularly in the field of photofinishing services. The company offers to receive customers' photos, process and develop them, and then return them within 24 hours, often on the same day.

Sion Tourisme SA 

Sion · Since 2023

The core activity of Sion Tourisme is tourism, specifically the promotion and organization of tourist activities in the city of Sion and its surroundings. This includes providing information and services for tourists, organizing guided tours and events, marketing accommodations and restaurants, as well as promoting leisure activities such as hiking, cycling, and cultural events.

Ski Valais 

Sion · Since 2024

The core activity of Ski Valais is the promotion and organization of ski sports activities, particularly in alpine skiing, Nordic skiing and freestyle skiing. This includes the selection and support of athletes, the organization of competitions and cups, such as the Raiffeisen Trophy and the IRW Cup, as well as cooperation with ski clubs and the implementation of youth cups.

Smartsuna SA 

Sion · Since 2020

Smartsuna provides solutions for companies to increase their energy autonomy by installing solar systems and implementing energy management systems to optimize energy consumption and reduce dependence on the power grid.

Société de Contrôles SA 

Sion · Since 2020

The core activity of SCSA (Société de contrôles SA) consists of carrying out technical inspections and safety checks on electrical and heating systems, including maintenance and repair of these systems. The company also provides consulting and guidance services to support customers in optimizing their safety, costs and environmental impact.

Sommet Global SA 

Sion · Since 2021

The core activity of Sommet Global BPO is to provide Business Process Outsourcing (BPO) services to companies operating in Europe and emerging markets. This includes: Support for the establishment of local companies and legal entities, Tax and accounting, Payroll and personnel management, Recruitment and employment of IT specialists and sales staff, Consulting services for companies looking to expand into Europe. The company thus offers a comprehensive range of services to support companies in their expansion into Europe and emerging markets and to optimize their business processes.

SORCE-INVEST Sàrl 

Sion · Since 2023

The core activity of SORCE-INVEST is real estate investment and management, including legal structuring, property management, project control and revaluation. The company invests in residential, commercial and development projects and offers investment strategies aimed at increasing the value of real estate investments in the long term.