Company lists · Data refreshed November 2026

Top 25 Refinery modernization contractors based in Switzerland

RevenueBase identified 137 company matches for refinery modernization contractors associated with Switzerland as of November 2026 and tracks 2,194 professional contacts across them, including 1,036 with verified work emails. Zurich is the largest hub.

This list covers company matches for refinery modernization contractors associated with Switzerland, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
137Companies
2,194Contacts tracked
1,036Verified emails
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The 25 largest refinery modernization contractors based in Switzerland

Ranked by team size
Top 25 of 137 company matches for refinery modernization contractors based in Switzerland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchZurich, SwitzerlandHQ recorded Nov 6, 20261,001-5,000571 contacts →

Exact match

“Ü Ingenieurskunst bedeutet, mit Ressourcen richtig umzugehen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMonthey, SwitzerlandHQ recorded Nov 6, 2026201-500275 contacts →

Exact match

“CIMO Compagnie industrielle de Monthey SA est une entreprise privée créée le 1er janvier 1997.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchBern 14, SwitzerlandHQ recorded Nov 6, 2026201-500164 contacts →

Exact match

“IUB Engineering AG has been an overall planner for infrastructure systems for over 50 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchVillars-ste-croix, SwitzerlandHQ recorded Nov 6, 202651-20076 contacts →

Exact match

“Nous sommes une entreprise qui a pour but l'ingénierie, le conseil, la conception, l'établissement de projets, la direction des travaux et l'exploitation dans le domaine des…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchWil, SwitzerlandHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“Bauprojekte sind Teamleistungen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact match1920 Martigny, SwitzerlandHQ recorded Nov 6, 202651-20058 contacts →

Exact match

“From the first reflection to the achievement, you can trust our expertise for your ambitious projects.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchEchallens, SwitzerlandHQ recorded Nov 6, 202651-20052 contacts →

Exact match

“Weinmann-Energies est un bureau d’ingénieurs-conseils EPFL-SIA-SuisseIng.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchWalterswil, SwitzerlandHQ recorded Nov 6, 202651-20043 contacts →

Exact match

“Die Firma Qualinox AG ist spezialisiert im Bereich verfahrenstechnischer Anlagenbau mit Schwerpunkt Rohrleitungsbau – vorzugsweise für die Chemie- sowie Pharma- und…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBasel, SwitzerlandHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“Gruner AG, Gebäudetechnik Basel, gegründet 1974, ist eine unabhängige Ingenieur- und Planungsfirma.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchMartigny, SwitzerlandHQ recorded Nov 6, 202611-5037 contacts →

Exact match

“Revolutionize your industry with our sustainable and innovative solutions for chemistry, pharma, food, and microtechnology.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchZürich, SwitzerlandHQ recorded Nov 6, 202651-20035 contacts →

Exact match

“1922 von Ernst Rathgeb gegründet, hat unser Unternehmen bereits in frühen Jahren an wichtigen Bauwerken wie z.B.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchLancy, SwitzerlandHQ recorded Nov 6, 202651-20033 contacts →

Exact match

“PEG is an Independent Engineering Consultant specializing in Cement, Environment and Infrastructure projects.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchFribourg, SwitzerlandHQ recorded Nov 6, 202651-20031 contacts →

Exact match

“TECNOSERVICE ENGINEERING SA est un bureau d’études et d’ingénieurs conseils pour les installations techniques et études énergétiques liées au bâtiment et à l’industrie.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchGeneve Carouge, SwitzerlandHQ recorded Nov 6, 202611-5029 contacts →

Exact match

“Cement Engineering SA (CESA) Engineering is a professionals business!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchGeneva, SwitzerlandHQ recorded Nov 6, 2026201-50027 contacts →

Exact match

“Since 1998, Techfirm Industrial Services is an independent Swiss engineering consulting company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchCollombey, SwitzerlandHQ recorded Nov 6, 202651-20022 contacts →

Exact match

“Fondée en 1989, Péchigaz SA est active dans la construction d’installations industrielles touchant les complexes chimiques, pharmaceutiques, alimentaires, hydroélectriques…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMünchenstein, SwitzerlandHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“Herzlich willkommen bei HINE – Ihrem führenden Experten für das präzise Planen von verfahrenstechnischen Anlagen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchConfignon, SwitzerlandHQ recorded Nov 6, 202611-5017 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchBern, SwitzerlandHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Firma: Seit 1982 ist NBG Ingenieure AG eine unabhängige Aktiengesellschaft, die ihre Kunden zu allen Energie- und Technikfragen beim Bau und der Sanierung grosser Gebäude berät.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchGrüsch, SwitzerlandHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“Züst Ingenieurbüro Haustechnik AG is a company based out of Landstrass 57, Grüsch, Germany.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchAzmoos, SwitzerlandHQ recorded Nov 6, 202651-20012 contacts →

Exact match

“Die Marty Gruppe ist ein inhabergeführter Firmenverbund, der aus den Unternehmen Marty Bauleistungen AG, Marty Transportleistungen AG, Marty Spezialleistungen AG (Rohrleitungsbau).”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchLes Acacias, SwitzerlandHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Energestion SA est un bureau d'ingénieurs conseils du bâtiment et en industrie.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchZürich, SwitzerlandHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“Wir stellen Ihnen unsere über 50-jährige Erfahrung im Anlagenbau zur Verfügung.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchBasel, SwitzerlandHQ recorded Nov 6, 20261-108 contacts →

Exact match

“At Lederer & Partner AG, we transform complex visions into clear, successful results.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchLausanne, SwitzerlandHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Chammartin & Spicher SA est une société d'ingénieurs-conseils active dans le secteur des installations techniques du bâtiment et de l'énergie, en particulier le chauffage, la…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 137 refinery modernization contractors based in Switzerland

See the full list, filter by size, metro and specialty, and access 1,036 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Refinery modernization contractors based in Switzerland at a glance

As of Nov 6, 2026
47.2%Verified-email coverage
16.0Average contacts per company
11-50Median size (employees)
5.1%Largest-city concentration · Zurich
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
63
11-50
47
51-200
17
201-500
3
501-1,000
2
1,001-5,000
1

Email recency for this list is measured worldwide rather than for Switzerland, so it is reported there. Company counts and contact totals on this page are exact for Switzerland, over 137 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Switzerland whose business descriptions match “refinery modernization contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 1,036 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “refinery modernization contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many refinery modernization contractors are there based in Switzerland?

RevenueBase identified 137 company matches for refinery modernization contractors associated with Switzerland as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Amstein Walthert tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most refinery modernization contractors?

Zurich leads with 7 company records, followed by Basel (6) and Geneva (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,036 professional contacts with verified work emails tracked across these 137 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.