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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,173 companies indexed · Last updated: today
DirectoryTechnical Consulting & Engineering

Technical Consulting & Engineering

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10'496 companies found

Aqua Dynamics SA Logo

Aqua Dynamics SA 

Vevey · Since 2011

Aqua Dynamics SA provides proprietary processes for the treatment of produced water and contaminated industrial effluent, including Ceramic High Flux (CHF) membrane filtration and Catalytic Wet Air Oxidation (CWAO). The company serves oil and gas production, refineries, petrochemical and coal‑gasification operations, mining, marine and other industrial sectors with compact modular units for new‑build and retrofit applications.

Technical Consulting & Engineering
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AQUAFILTECH AG Logo

AQUAFILTECH AG 

Kaltbrunn · Since 2022

The core activity of AQUAFILTECH AG is the development and application of ceramic high-performance modules and components for the water and wastewater industry, particularly in the field of ultrafiltration of water. The company offers innovative solutions and products, such as filter modules, compact plants and mobile plants, as well as services like consulting and project implementation, to solve the most demanding water problems.

Technical Consulting & Engineering
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AQUA GEO VITA, Walter U. Krähenbühl Logo

AQUA GEO VITA, Walter U. Krähenbühl 

Davos Platz · Since 2011

AQUA GEO VITA is primarily engaged in health consulting and regulation of E-Smog, electromagnetic pollution, geobiology, Feng Shui and radiesthesia. The company offers services such as water consulting, health consulting and space clearing. The founder, Walter U. Krähenbühl, is a dowser, water diviner and architect. The company also operates a shop and offers publications on the mentioned topics.

Technical Consulting & Engineering
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Aquageo Sàrl Logo

Aquageo Sàrl 

Syens · Since 2017

The core activity of Aquageo sàrl encompasses expertise and services in the following areas: Hydrogeology (investigation and evaluation of groundwater resources and systems), Geology (exploration and evaluation of geological formations and processes), Geothermal energy (utilization of earth heat for energy production), Geotechnics (application of geological and geotechnical principles for construction and infrastructure projects), and Environment (investigation and evaluation of environmental impacts, particularly in the areas of water and soil). The company provides these services primarily for projects in Switzerland, mainly in the regions of Fribourg, Vaud, Neuchâtel, Ticino, and Valais.

Technical Consulting & Engineering
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Aqua Innovation GmbH Logo

Aqua Innovation GmbH 

Rotkreuz · Since 2010

The core activity of Aqua Innovation GmbH is the development, production and marketing of water and air treatment systems, particularly filtration techniques and disinfection systems using UV-C light.

Technical Consulting & Engineering
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AquaPlanIng GmbH Logo

AquaPlanIng GmbH 

Lyss · Since 2006

AquaPlanIng GmbH is an engineering office for building services. It provides planning and design of heating, ventilation and sanitary systems, including concept development, heat and cooling load calculations, execution planning, cost estimation/tendering, and services such as Minergie specialist planning and GEAK energy certificates.

Technical Consulting & Engineering
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AquaPlus AG Logo

AquaPlus AG 

Zug · Since 1995

The core activity of AquaPlus AG is consulting and planning in the field of water bodies, particularly in ecology and environmentally related natural and engineering sciences. The activities include, among others: flood protection projects, revitalization of water bodies, planning and consulting for hydropower plants, ecological construction supervision and environmental construction supervision, water body monitoring and management, fish ecology and fish protection, habitat modeling and restoration, residual water clarification and restoration, and protection and utilization planning (SNP). The company also offers specific services such as diving surveys, underwater photography, ecotoxicology, and biostatistics. The core activity of AquaPlus AG thus lies in comprehensive consulting and planning for water projects, with a focus on ecology and environmental protection.

Technical Consulting & Engineering
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Aquaplus Service Sàrl Logo

Aquaplus Service Sàrl 

Chézard-St-Martin · Since 2014

Aquaplus Service Sàrl is a water treatment company offering services such as water treatment, filtration, mineral analyses and descaling. Its services include laboratory analyses, physical and chemical treatments (softening, demineralization, disinfection), maintenance of systems and supply of pool technology products and industrial water-treatment solutions.

Technical Consulting & EngineeringWholesale - Chemical & Plastic Products
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Aquaren GmbH Logo

Aquaren GmbH 

Derendingen · Since 2010

The core activity of Aquaren GmbH is the development, planning, consulting, construction and servicing of system solutions for water treatment and wastewater treatment, particularly in the industrial and commercial sectors. The company offers customized solutions for various industries such as electroplating, painting, die-casting, component cleaning, vehicle washing, pharmaceutical and textile industries.

Technical Consulting & Engineering
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Aquased GmbH Logo

Aquased GmbH 

Winterthur · Since 2022

The core activity of Aquased GmbH is the provision of specialized engineering and research services in the fields of water and sediment as well as turbine abrasion and corresponding countermeasures, particularly in the context of sediment management in water bodies and the operation and maintenance of hydropower plants.

Technical Consulting & Engineering
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AQUASOL Engineering GmbH Logo

AQUASOL Engineering GmbH 

Tägerig · Since 2003

AQUASOL Engineering GmbH provides engineering services in water management, urban drainage and meteorology. The company trades hydrometric and meteorological instruments, assembles and manufactures measurement systems and complete stations, supplies OEM mobile systems, and offers consulting plus planning, construction, operation, maintenance and fault-response services for measurement networks.

Technical Consulting & Engineering
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aquaTech Services SA Logo

aquaTech Services SA 

Sion · Since 2011

The core activity of Aquatech Services is to support and advise municipal waterworks and service providers in the safe and efficient management of drinking water, particularly in the area of ensuring drinking water supply and compliance with safety standards.

Technical Consulting & Engineering
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AQUATEC SYSTEM AG Logo

AQUATEC SYSTEM AG 

Wald Zh · Since 2020

The core activity of Aquatec System AG is the performance of non-destructive moisture scans on buildings and structures, particularly in the areas of floors, basements, flat roofs, facades, parking decks, roof terraces and underground garages, in order to detect and document moisture damage.

Technical Consulting & Engineering
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AquaVallo GmbH Logo

AquaVallo GmbH 

Dällikon · Since 2018

The core activity of AquaVallo GmbH is water treatment, including maintenance and distribution of related products such as measurement and dosing systems as well as biocide products. The company also offers consulting and service for water projects and specializes in providing solutions for drinking water treatment, including legionella control.

Technical Consulting & EngineeringWater Supply
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AquaVision engineering Sàrl Logo

AquaVision engineering Sàrl 

Ecublens Vd · Since 2002

The core activity of AquaVision Engineering is the planning and development of hydraulic engineering projects, particularly in the field of hydraulic engineering. This includes the conception and execution of: Design and planning of hydraulic structures (Hydraulic Structures), Environmental Hydraulics, Investigation and prevention of erosion and scour (Scour and Erosion), Maritime Engineering, Morphology and Sediment Transport (Morphology/Sediment transport), and Flood Protection and Risk Management (Flood hazards). The company focuses on sustainable solutions in the field of water management and offers specialized services for the planning and execution of hydraulic engineering projects.

Technical Consulting & Engineering
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AQUIST Schweiz GmbH Logo

AQUIST Schweiz GmbH 

Stein Ag · Since 2024

Technical Consulting & Engineering
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AR11 Sagl Logo

AR11 Sagl 

Lugano · Since 2021

AR11 Sagl is an architecture studio offering design and construction services, with activities in new buildings, architectural renovations, urban requalification and real estate consulting.

Technical Consulting & Engineering
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Arbeit nach Mass Kämpfer Logo

Arbeit nach Mass Kämpfer 

Hünibach · Since 2022

Arbeit nach Mass Kämpfer provides general handyman and technical services, including repairs, painting, garden work, transport, removals and IT support. Services are billed by the hour with separate rates for private and business IT work, and a small van is available for transport tasks charged per kilometre.

Technical Consulting & EngineeringPainting & PlasteringIT Consulting & Services
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ARCHI TREND SA Logo

ARCHI TREND SA 

Lugano · Since 2009

Technical Consulting & Engineering
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ARV Sàrl Logo

ARV Sàrl 

Carouge Ge · Since 1999

The core activity of ARCHI-VISION SARL is the implementation of thermographic inspections, energy audits and technical expertise in the field of construction, particularly for the identification and localization of hidden defects and problems such as moisture damage, infiltrations, insulation errors and other non-visible construction defects.

Technical Consulting & Engineering
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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.
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How is organisation size determined?
Size reflects the number of employees and is calculated from publicly available information by a model developed in-house. It is a best-possible estimate, not an official figure.
What does the Verified label mean?
Verified means the entry is tied to a UID (Swiss business identification number) and therefore links back to the official Swiss business register. The label speaks to the company's identity — it is not a rating of its performance.

Source: Federal Statistical Office, UID register

How do I sort the results?
Use the dropdown above the list: Relevance, Name (A–Z), Best rating, Most reviews or Longest established. You can also switch between list and map view and set how many results appear per page.
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