Company lists · Data refreshed September 2026

Top 25 Cleanroom service providers based in Germany

Name: Cleanroom service providers based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 173 companies tracked

RevenueBase identified 173 cleanroom service providers headquartered in Germany as of September 2026 and tracks 1,667 professional contacts across them, including 749 with verified work emails. Berlin is the largest hub.

This list covers cleanroom service providers headquartered in Germany, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

173Companies

1,667Contacts tracked

749Verified emails

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The 25 largest cleanroom service providers based in Germany

Ranked by team size

Top 25 of 173 cleanroom service providers based in Germany, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to cleanroom service providers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	AAF International American AIR Filter Europe & Dinair	Indirect evidence	Heppenheim, GermanyHQ checked Sep 19, 2026	501-1,000	131 contacts →
	Indirect evidence “AAF International, the world's largest manufacturer of air filtration solutions, operates production, warehouse and distribution facilities in 22 countries on four continents.” Source: RevenueBase Database · checked Sep 19, 2026
2	Franz Ziel Gmbh	Strong evidence	Billerbeck, GermanyHQ checked Sep 19, 2026	201-500	103 contacts →
	Strong evidence “Franz Ziel GmbH stands for innovation, reliability and development in cleanroom technology.” Source: RevenueBase Database · checked Sep 19, 2026
3	CRC Hi-Tec Engineering	Indirect evidence	Freiburg, GermanyHQ checked Sep 19, 2026	51-200	102 contacts →
	Indirect evidence “CRC Clean Room Consulting GmbH - Gesellschaft für Reinraumtechnik CRC – Your premium ENGINEERING partner EPCM for Wafer-Fabs and High-Tech Facilities Du hast Freude am HI-TEC…” Source: RevenueBase Database · checked Sep 19, 2026
4	Keller Lufttechnik Gmbh	Indirect evidence	Kirchheim Unter Teck, GermanyHQ checked Sep 19, 2026	201-500	89 contacts →
	Indirect evidence “Unsere Leidenschaft ist es, mit innovativer Filtertechnik und nachhaltigen Absauglösungen für reine Luft in der Industrie zu sorgen.” Source: RevenueBase Database · checked Sep 19, 2026
5	Dastex Group Gmbh	Strong evidence	Muggensturm, GermanyHQ checked Sep 19, 2026	201-500	74 contacts →
	Strong evidence “Dastex Group is an international supplier of cleanroom apparel, cleaning materials, and consumables for contamination-controlled environments.” Source: RevenueBase Database · checked Sep 19, 2026
6	Weiss Klimatechnik Gmbh	Indirect evidence	Reiskirchen, GermanyHQ checked Sep 19, 2026	51-200	69 contacts →
	Indirect evidence “Weiss Klimatechnik offers reliable climate solutions wherever people and machinery are challenged: in industrial production processes, hospitals, mobile operating tents or in the…” Source: RevenueBase Database · checked Sep 19, 2026
7	Daldrop Dr.Ing.Huber	Indirect evidence	Neckartailfingen, GermanyHQ checked Sep 19, 2026	201-500	55 contacts →
	Indirect evidence “Since the company was founded in 1952 by Norbert Daldrop and Erwin Huber, we have been driven by a thirst for discovery.” Source: RevenueBase Database · checked Sep 19, 2026
8	Etna Gmbh	Indirect evidence	Frankfurt, GermanyHQ checked Sep 19, 2026	201-500	44 contacts →
	Indirect evidence “Als etabliertes Unternehmen im Bereich Luft- und Klimatechnik bietet etna Lösungen von einfachen Luft- und Klimatechnik-Anlagen für Dienstleistungs- und Industriebetriebe bis hin…” Source: RevenueBase Database · checked Sep 19, 2026
9	MK Metalfree	Indirect evidence	Mücke, GermanyHQ checked Sep 19, 2026	201-500	44 contacts →
	Indirect evidence “Since 1988, MK Versuchsanlagen GmbH & Co.” Source: RevenueBase Database · checked Sep 19, 2026
10	Hydroflex Group Gmbh	Indirect evidence	Buseck, GermanyHQ checked Sep 19, 2026	51-200	41 contacts →
	Indirect evidence “Engineered cleaning solutions for controlled environments.” Source: RevenueBase Database · checked Sep 19, 2026
11	Hengst Filtration Indoor AIR Filtration	Indirect evidence	Herne, GermanyHQ checked Sep 19, 2026	1,001-5,000	41 contacts →
	Indirect evidence “Hengst Filtration one of the leading technological leaders in air filtration.” Source: RevenueBase Database · checked Sep 19, 2026
12	Cleancontrolling	Indirect evidence	Emmingen-liptingen, GermanyHQ checked Sep 19, 2026	51-200	40 contacts →
	Indirect evidence “CleanControlling stands for comprehensive services in the fields of technical, medical and environmental cleanliness for surfaces, materials and media.” Source: RevenueBase Database · checked Sep 19, 2026
13	Clean-Tek Reinraumtechnik Gmbh	Indirect evidence	Renningen, GermanyHQ checked Sep 19, 2026	51-200	28 contacts →
	Indirect evidence “Als namhaftes und international ausgerichtetes mittelständisches Unternehmen mit Hauptsitz in Renningen bei Stuttgart planen und realisieren wir moderne und leistungsfähige…” Source: RevenueBase Database · checked Sep 19, 2026
14	Pure11 Gmbh	Strong evidence	Geiselgasteig, GermanyHQ checked Sep 19, 2026	11-50	27 contacts →
	Strong evidence “pure11 is a fast-growing supplier of cleanroom consumables in Europe.” Source: RevenueBase Database · checked Sep 19, 2026
15	Schilling Engineering Gmbh	Strong evidence	Wutöschingen, GermanyHQ checked Sep 19, 2026	51-200	24 contacts →
	Strong evidence “We at Schilling Engineering GmbH support our customers in creating a process-safe cleanroom according to individual requirements - from the solution concept for particle-free…” Source: RevenueBase Database · checked Sep 19, 2026
16	MKF Gmbh	Indirect evidence	Lederhose, GermanyHQ checked Sep 19, 2026	51-200	24 contacts →
	Indirect evidence “In der 1991 gegründeten mkf GmbH sind aus dem Sondermaschinenbau die Geschäftsfelder Automationslösungen, Produktionsservice sowie technische Sauberkeit und Reinraum entstanden.” Source: RevenueBase Database · checked Sep 19, 2026
17	Viessmann Technologies - Vitec	Strong evidence	Hof, GermanyHQ checked Sep 19, 2026	1,001-5,000	21 contacts →
	Strong evidence “Viessmann Technologies, shortly Vitec, is a world class innovative high tech services provider for cleanroom, controlled area and climate solutions – from consultation, design and…” Source: RevenueBase Database · checked Sep 19, 2026
18	HET Filter Gmbh	Indirect evidence	Altenstadt, GermanyHQ checked Sep 19, 2026	11-50	20 contacts →
	Indirect evidence “HET Filter GmbH was established in Altenstadt in 1989.” Source: RevenueBase Database · checked Sep 19, 2026
19	Instruclean Gmbh	Indirect evidence	Essen, GermanyHQ checked Sep 19, 2026	201-500	19 contacts →
	Indirect evidence “INSTRUCLEAN is Germany's largest, independent service provider for the decontamination of medical devices.” Source: RevenueBase Database · checked Sep 19, 2026
20	Integrated Dynamics Engineering Gmbh	Indirect evidence	Raunheim, GermanyHQ checked Sep 19, 2026	51-200	16 contacts →
	Indirect evidence “30 Years of Global Leadership in Developing, Manufacturing and Installing a highly selective array of Environmental Controls and Material Handling Systems.” Source: RevenueBase Database · checked Sep 19, 2026
21	Gsec Gmbh	Indirect evidence	Radolfzell, GermanyHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “Highest performance in cleaning for Semiconductor Industries” Source: RevenueBase Database · checked Sep 19, 2026
22	Kretz Wahl	Indirect evidence	Fernwald-steinbach, GermanyHQ checked Sep 19, 2026	51-200	15 contacts →
	Indirect evidence “Mit über 40 Jahren Expertise sind wir ein erfahrener Partner in der Gebäude, Lüftungs, Klima- und Reinraumtechnik.” Source: RevenueBase Database · checked Sep 19, 2026
23	Petek Reinraumtechnik Gmbh	Indirect evidence	Radolfzell, GermanyHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “Sauberkeit ist nicht immer nur eine Frage des guten Geschmacks.” Source: RevenueBase Database · checked Sep 19, 2026
24	CAT Clean AIR Technology Gmbh CAT Group	Indirect evidence	Stuttgart, GermanyHQ checked Sep 19, 2026	51-200	12 contacts →
	Indirect evidence “Ob in Pharmaindustrie, Biotechnologie oder Medizintechnik, ob in Lebensmittelindustrie, Halbleiterfertigung, Mikroelektronik oder im Krankenhaus - Reinräume findet man überall.” Source: RevenueBase Database · checked Sep 19, 2026
25	Dolge Systemtechnik Gmbh	Indirect evidence	Eschwege, GermanyHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence “Vielen Unternehmen ist nicht bewusst, dass durch Verschmutzungen in der Luft, Ihre komplette Elektronik beeinflusst werden kann.” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: cleanroom service providers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names cleanroom service providers.
Partial evidence: Its own public description names part of cleanroom service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cleanroom service providers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 173 cleanroom service providers based in Germany

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Cleanroom service providers based in Germany at a glance

As of Sep 19, 2026

44.9%Verified-email coverage

9.6Average contacts per company

11-50Median size (employees)

4.0%Largest-city concentration · Berlin

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 173 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among cleanroom service providers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Germany whose own description of what they do matches “cleanroom service providers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names cleanroom service providers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among cleanroom service providers, and records with no verified work email. Companies headquartered outside Germany are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 749 across the full list. 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 September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names cleanroom service providers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many cleanroom service providers are there based in Germany?

RevenueBase identified 173 cleanroom service providers headquartered in Germany as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

AAF International American AIR Filter Europe & Dinair, headquartered in Heppenheim, tops this list with the largest team on record.

Which city has the most cleanroom service providers?

Berlin leads with 7 headquartered companies, followed by Munchen (4) and Neckartailfingen (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 749 verified decision-maker contacts tracked across these 173 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 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 Smart Search, 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.