Company lists · Data refreshed November 2026

Top 25 Refinery upgrade contractors based in Germany

RevenueBase identified 409 company matches for refinery upgrade contractors associated with Germany as of November 2026 and tracks 10,733 professional contacts across them, including 1,853 with verified work emails. Berlin is the largest hub.

This list covers company matches for refinery upgrade contractors associated with Germany, 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
409Companies
10,733Contacts tracked
1,853Verified emails
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The 25 largest refinery upgrade contractors based in Germany

Ranked by team size
Top 25 of 409 company matches for refinery upgrade contractors based in Germany, 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 matchHürth, GermanyHQ recorded Nov 6, 20261,001-5,000270 contacts →

Exact match

“YNCORIS ist als einer der führenden Industriedienstleister der ideale Partner für Chemie-Unternehmen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchRömerberg, GermanyHQ recorded Nov 6, 2026501-1,000269 contacts →

Exact match

“INP International Projects is an owner-managed engineering company with its headquarters in Römerberg.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchCologne, GermanyHQ recorded Nov 6, 2026201-500255 contacts →

Exact match

“Impressum: plant-ing.de/impressum”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLeverkusen, GermanyHQ recorded Nov 6, 20261,001-5,000192 contacts →

Exact match

“Als eines der führenden Instandhaltungsunternehmen sorgt Tectrion mit 1.100 Mitarbeiter*innen und fast 145 Azubis für den sicheren und störungsfreien Betrieb von…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchBremen, GermanyHQ recorded Nov 6, 2026501-1,000131 contacts →

Exact match

“WWV is a multi-service group specialising in system engineering, plant construction and maintenance for the process industry in Europe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchQuakenbrueck, GermanyHQ recorded Nov 6, 202651-200122 contacts →

Exact match

“PSE Engineering GmbH is a modern engineering company with an especially successful history and a promising future.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchMunich, GermanyHQ recorded Nov 6, 202651-20091 contacts →

Exact match

“Die ZM-I Gruppe ist eine unabhängige, partnerschaftlich organisierte Ingenieurgesellschaft für anspruchsvolle Bauprojekte.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchEssen, GermanyHQ recorded Nov 6, 2026201-50089 contacts →

Exact match

“The owner managed Küttner Group operates internationally as industrial plant engineers in a wide range of industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchRosenheim, GermanyHQ recorded Nov 6, 2026501-1,00089 contacts →

Exact match

“Who we are Our passion for engineering has no bounds.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchKarlsruhe, GermanyHQ recorded Nov 6, 2026501-1,00080 contacts →

Exact match

“We at Veltec are an independent, medium-sized group of companies and, together with the sister companies of the ETABO Group, form a strong alliance under the umbrella of the Plant…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchGriesheim, GermanyHQ recorded Nov 6, 2026201-50073 contacts →

Exact match

“SWJ - Experten für innovative Lösungen Die Erbringung von Consulting, Ingenieur und Architekturdienstleistungen aller Art im Industrie- und Privatsektor und der öffentlichen Hand…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchDortmund, GermanyHQ recorded Nov 6, 202651-20068 contacts →

Exact match

“Das Ingenieurbüro UTEK GmbH bietet Kunden Ingenieurleistungen an.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchBohmte, GermanyHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“Seit 50 Jahren sorgt Keil Anlagenbau für Effizienz in der industriellen Produktion.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchGelsenkirchen, GermanyHQ recorded Nov 6, 2026201-50049 contacts →

Exact match

“Als eigenständiges Ingenieurunternehmen ist die VTA Verfahrenstechnik und Automatisierung GmbH mit Hauptsitz in Gelsenkirchen und den Standorten in Lingen und Schwedt ein…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchDüren, GermanyHQ recorded Nov 6, 202651-20043 contacts →

Exact match

“The weyer group is a group- and supplier-independent corporate association of engineering and consulting companies, linked under company law.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchEssen, GermanyHQ recorded Nov 6, 202651-20043 contacts →

Exact match

“Heitkamp blickt auf mehr als 130 Jahre Bautradition zurück.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBerlin, GermanyHQ recorded Nov 6, 202651-20041 contacts →

Exact match

“FST Industrie GmbH is a special machinery and plant manufacture company for Industry products and services based in Berlin, Germany”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchHamburg, GermanyHQ recorded Nov 6, 202651-20041 contacts →

Exact match

“Die Ingenion GmbH mit Sitz in Hamburg ist ein Ingenieurbüro, das seit 20 Jahren erfolgreich in den Bereichen Energie, Luftfahrt und Anlagenbau tätig ist.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchGelsenkirchen, GermanyHQ recorded Nov 6, 2026501-1,00040 contacts →

Exact match

“Today the Gelsenkirchen-based IIG Group is one of the last privately managed medium-sized corporate groups to combine a unique portfolio of industrial services under one roof.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchHolzminden, GermanyHQ recorded Nov 6, 2026201-50040 contacts →

Exact match

“May we introduce ourselves?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSiegen, GermanyHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“SPG Steiner GmbH is a German based family owned company with history of over 300 years and is committed with its business units to providing client orientated engineering…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchArnstadt, GermanyHQ recorded Nov 6, 202651-20035 contacts →

Exact match

“EPC Engineering & Technologies GmbH, headquartered in Arnstadt, Germany, is part of the globally active EPC Group.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchEssen, GermanyHQ recorded Nov 6, 202651-20035 contacts →

Exact match

“Second generation family-managed, competent and approachable, regionally connected and open, customer-focused and consistent - welcome to AMR-Engineering GmbH in Essen!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchWiesbaden, GermanyHQ recorded Nov 6, 202651-20034 contacts →

Exact match

“HUGO PETERSEN - Verfahrenstechnischer Anlagenbau Inspired by our motto "Passion for Plant Engineering", HUGO PETERSEN has been offering customised solutions in chemical plant…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchRecklinghausen, GermanyHQ recorded Nov 6, 2026201-50033 contacts →

Exact match

“Wallstein is an internationally operating corporate group in equipment and plant engineering with over 300 employees and a worldwide sales network.”

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

Showing 25 of 409 refinery upgrade contractors based in Germany

See the full list, filter by size, metro and specialty, and access 1,853 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Refinery upgrade contractors based in Germany at a glance

As of Nov 6, 2026
17.3%Verified-email coverage
26.2Average contacts per company
11-50Median size (employees)
3.7%Largest-city concentration · Berlin
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
161
11-50
120
51-200
76
201-500
19
501-1,000
12
1,001-5,000
5
10001+
1

Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 409 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 Germany whose business descriptions match “refinery upgrade 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 1,853 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 upgrade contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many refinery upgrade contractors are there based in Germany?

RevenueBase identified 409 company matches for refinery upgrade contractors associated with Germany 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?

Yncoris Gmbh & Co. KG tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most refinery upgrade contractors?

Berlin leads with 15 company records, followed by Hamburg (15) and Cologne (10).

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 1,853 professional contacts with verified work emails tracked across these 409 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.