Company lists · Data refreshed November 2026

Top 25 Insulator testing companies based in Germany

RevenueBase identified 66 company matches for insulator testing companies associated with Germany as of November 2026 and tracks 1,224 professional contacts across them, including 440 with verified work emails. Bochum is the largest hub.

This list covers company matches for insulator testing companies 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
66Companies
1,224Contacts tracked
440Verified emails
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The 25 largest insulator testing companies based in Germany

Ranked by team size
Top 25 of 66 company matches for insulator testing companies 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 matchWesel, GermanyHQ recorded Nov 6, 20261,001-5,000419 contacts →

Exact match

“Please note that this account is no longer being actively managed.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchDresden, GermanyHQ recorded Nov 6, 2026201-500178 contacts →

Exact match

“HIGHVOLT Prüftechnik Dresden GmbH is a global leader in high voltage and high current test systems and measurement equipment with experience of 120 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchMannheim, GermanyHQ recorded Nov 6, 2026201-500105 contacts →

Exact match

“Die DPG ist der innovative Dienstleister für hochwertige elektrische und nichtelektrische Betriebssicherheitsprüfungen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact match69493, GermanyHQ recorded Nov 6, 2026201-50076 contacts →

Exact match

“Die KPS Prüfservice ist bundesweit unter den marktführenden Unternehmen im Bereich elektrische Betriebsmittelprüfungen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchDüren, GermanyHQ recorded Nov 6, 202651-20020 contacts →

Exact match

“KUVAG - Leading in Insulation Technology”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchAachen, GermanyHQ recorded Nov 6, 202651-20018 contacts →

Exact match

“Welcome to Power Diagnostix Systems GmbH, Aachen, Germany.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchKorntal-münchingen, GermanyHQ recorded Nov 6, 202651-20018 contacts →

Exact match

“ETL Prüftechnik GmbH – Elektrische Prüfgeräte und Prüfsysteme.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSchwäbisch Hall, GermanyHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Welcome to SPS electronic Whenever electrical current flows in a device, it is likely that its function and safety have been checked using technology from SPS electronic.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchFrechen, GermanyHQ recorded Nov 6, 202651-20015 contacts →

Exact match

“Ihr Partner für Elektrosicherheit.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchBonn, GermanyHQ recorded Nov 6, 202651-20015 contacts →

Exact match

“The Institute for International Product Safety GmbH (I2PS) is an independent, accredited laboratory that provides testing services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSiegburg, GermanyHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“Georg Jordan GmbH is a company based out of 20 Industriestraße, Siegburg, Germany.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchHeppenheim, GermanyHQ recorded Nov 6, 202651-20014 contacts →

Exact match

“Karau Prüfservice GmbH WEIL KEIN BETRIEB WIE DER ANDERE IST Individuelle Prüfkonzepte für Ihr Unternehmen!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchNeckargemünd, GermanyHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Wenn es um die vollständige elektrotechnische Prüfung Ihres Unternehmens geht, können Sie sich auf uns verlassen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchChemnitz, GermanyHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Your testing partner for Power Semiconductors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchStahnsdorf, GermanyHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“PEP Service ist Ihr professioneller Dienstleister für zertifizierte elektrische Prüfungen, der sich den individuellen Bedürfnissen Ihres Unternehmens anpasst.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchGermanyHQ recorded Nov 6, 2026201-5008 contacts →

Exact match

“Wir prüfen bundesweit elektrische Anlagen und Betriebsmittel Sicherheit mit System - Die E-Service Check GmbH.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBremen, GermanyHQ recorded Nov 6, 20261-107 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchDüsseldorf, GermanyHQ recorded Nov 6, 20261-105 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchKassel, GermanyHQ recorded Nov 6, 202611-504 contacts →

Exact match

“Wir sind Ihr Partner bei der Untersuchung und Entwicklung von elektrischen Isolierstoffen und Hochspannungsprüfungen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchMünster, GermanyHQ recorded Nov 6, 20261-103 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLangenfeld, GermanyHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Rheinische Prüfservice GmbH, ein junges aber hochmotiviertes Unternehmen, das sich auf die Prüfung der elektrischen Betriebssicherheit in Unternehmen spezialisiert hat.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchSchorndorf, GermanyHQ recorded Nov 6, 20261-103 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchMönchengladbach, GermanyHQ recorded Nov 6, 20261-102 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchBremen, GermanyHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Elektrische Betriebssicherheit für Unternehmen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSchwabmünchen, GermanyHQ recorded Nov 6, 20261-102 contacts →

Exact match

“M.G.”

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

Showing 25 of 66 insulator testing companies based in Germany

See the full list, filter by size, metro and specialty, and access 440 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Insulator testing companies based in Germany at a glance

As of Nov 6, 2026
35.9%Verified-email coverage
18.5Average contacts per company
11-50Median size (employees)
4.5%Largest-city concentration · Bochum
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
27
11-50
17
51-200
12
201-500
5
1,001-5,000
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 66 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 “insulator testing companies” 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 440 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 “insulator testing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many insulator testing companies are there based in Germany?

RevenueBase identified 66 company matches for insulator testing companies 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?

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

Which city has the most insulator testing companies?

Bochum leads with 3 company records, followed by Aachen (2) and Bremen (2).

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 440 professional contacts with verified work emails tracked across these 66 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.