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9'016 companies found

Walter Lüchinger AG

Widnau · Since 2019

The company's core activity is the planning, execution and maintenance of building technical systems, particularly in the areas of sanitation, heating, air conditioning and ventilation, as well as energy management and optimization for industrial and commercial enterprises.

Solar & Photovoltaics

View profile4.6(9)

Willy Gysin AG

Liestal · Since 1975

The core activity of Willy Gysin AG encompasses three main areas: 1. **Electrical Installations**: The company offers comprehensive services in the field of electrical installations, ranging from simple power outlets to complex energy distribution systems and infrastructure. 2. **Telecommunications**: Willy Gysin AG plans and installs telecommunications solutions, from the installation of a single telephone to complex network solutions. 3. **Photovoltaics**: The company provides services in the field of photovoltaics, including the planning and installation of solar power systems. Overall, Willy Gysin AG offers a wide range of services in the fields of electrical engineering, telecommunications, and renewable energy.

Solar & Photovoltaics

View profile4.4(9)

Wullschleger Kanalreinigung AG

Affoltern Am Albis · Since 2003

The core activity of Wullschleger Kanalreinigung AG includes sewer cleaning, particularly cleaning, flushing and suction work, as well as dry conveying, including suction and blowing of various materials, such as gravel and roofing substrates.

Waste Management Industry

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Wyss Sanitär Heizung GmbH

Matzendorf · Since 2011

Wyss Sanitär Heizung GmbH is a family-run building services company offering plumbing installations, heating systems, bathroom renovations, and water-supply and pipeline work. The company performs new-build and conversion projects and provides planning and implementation support for heating and sanitary installations.

Waste Management Industry

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ZAV Recycling AG

Hinwil · Since 2013

The core activity of ZAV Recycling AG is the thermo-recycling of waste, which combines thermal decomposition of waste with a new processing technology to recover valuable raw materials such as metals and mineral components, while minimizing environmental impact by reducing landfill disposal and saving heating oil.

Waste Management Industry

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Zwicky Kanalreinigungen AG

Hinwil · Since 2011

Zwicky Kanalreinigungen AG provides sewer and pipe cleaning services including high-pressure water jetting, mechanical clearance of blockages and surface/area cleaning. The company also carries out CCTV inspections with video recording, pipeline locating and leak testing in accordance with SIA 190.

Waste Management Industry

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AABA AG

Bremgarten Ag · Since 2002

The core activity of AaBa AG is the disposal of used tires. The company offers customized services for the proper disposal of used tires, strictly adhering to applicable regulations and maintaining the highest environmental standards.

Waste Management Industry

View profile3.5(8)

Aargatec GmbH

Lenzburg · Since 2022

The core activity of Aargatec GmbH is the planning, installation and maintenance of photovoltaic systems (PV systems) as well as energy consulting and management in the field of renewable energies. The company also offers services such as project accompaniment, project management, energy consulting, self-consumption pooling, electromobility, storage systems and energy management software.

Solar & Photovoltaics

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AEK Pellet AG

Balsthal · Since 2003

The core activity of AEK Pellet AG is the production of wood pellets as a renewable fuel for heating purposes. The company processes untreated sawdust into high-quality pellets, which are marketed under the AEK-Pellets brand.

Energy SuppliersWood Processing & Sawmills

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Affolter Spenglerei GmbH

Bern · Since 2017

The core activity of Affolter Spenglerei is the provision of services in the field of sheet metal work, particularly in the areas of: sheet metal work (skylights, roof windows, drainage, metal facades, chimney cladding), roofing (roof renovations, pitched roofs, flat roofs, metal roofs, roof maintenance), solar (individual solar solutions for roofs, in-roof systems, on-roof systems, consulting, planning), and lightning protection (air terminal, down conductor, earthing, testing). The company offers these services as a craft business and complements traditional techniques with modern methods.

Solar & Photovoltaics

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Frequently asked questions

Searching the directory

How the search works, what each filter means, and how the results come together.

What can I search for in the directory?

The search field matches company names, industries and places. Beyond that you can filter by Industry (18 categories based on the NOGA classification), Size (number of employees), Region (canton, language region or postal code) and Special (keywords and entry date). Filters combine freely; the active ones appear as chips below the filter bar and can be removed there individually.

How do keywords work?

Keywords search the description and stated purpose of each company — the text that goes beyond the company name. Multiple keywords are combined with OR: every additional keyword widens the set of matches rather than narrowing it.

What belongs in the postal code field?

A single postal code (e.g. 8000) or a range (e.g. 1000-1010). The field accepts postal codes only — for place names, use Canton or Language region.