Company lists · Data refreshed September 2026

Top 25 Cleanroom manufacturers based in the United States

Name: Cleanroom manufacturers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 502 companies tracked

RevenueBase identified 502 cleanroom manufacturers headquartered in the United States as of September 2026 and tracks 9,891 professional contacts across them, including 3,714 with verified work emails. Grand Rapids is the largest hub.

This list covers cleanroom manufacturers headquartered in the United States, 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 30, 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 30, 2026 86% judged on-target in blind review

502Companies

9,891Contacts tracked

3,714Verified emails

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The 25 largest cleanroom manufacturers based in the United States

Ranked by team size

Top 25 of 502 cleanroom manufacturers based in the United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to cleanroom manufacturers: 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	Kewaunee Scientific Corp	Indirect evidence	Statesville, NC, United StatesHQ checked Sep 30, 2026	501-1,000	426 contacts →
	Indirect evidence “Kewaunee Scientific Corporation, founded in 1906, carries a lasting legacy of design, engineering, and manufacturing excellence.” Source: RevenueBase Database · checked Sep 30, 2026
2	Contec, INC	Partial evidence	Spartanburg, SC, United StatesHQ checked Sep 30, 2026	501-1,000	422 contacts →
	Partial evidence “At Contec, we are more than just a manufacturer; we are a trusted partner in maintaining the highest standards of cleanliness and hygiene in mission-critical environments.” Source: RevenueBase Database · checked Sep 30, 2026
3	Brycon	Partial evidence	Rio Rancho, NM, United StatesHQ checked Sep 30, 2026	501-1,000	383 contacts →
	Partial evidence “Brycon was founded on June 1, 1990, in New Mexico to fit a market need for specialized cleanroom construction.” Source: RevenueBase Database · checked Sep 30, 2026
4	Controlled Contamination Services	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	253 contacts →
	Indirect evidence “Controlled Contamination Services is the leading provider of enterprise solutions for the pharmaceutical, biotech, medical device, electronic, data center, semiconductor…” Source: RevenueBase Database · checked Sep 30, 2026
5	Azzur Group	Partial evidence	Burlington, MA, United StatesHQ checked Sep 30, 2026	51-200	224 contacts →
	Partial evidence “Visit chrysalisgxp.com for GMP-ready cleanrooms and services.” Source: RevenueBase Database · checked Sep 30, 2026
6	Labconco Corporation	Partial evidence	Kansas City, MO, United StatesHQ checked Sep 30, 2026	201-500	210 contacts →
	Partial evidence “Serving the scientific community since 1925, Labconco Corporation manufactures laboratory equipment, specializing in ventilation products such as chemical fume hoods and blowers…” Source: RevenueBase Database · checked Sep 30, 2026
7	AES Cleanroom Technology	Strong evidence	Montgomeryville, PA, United StatesHQ checked Sep 30, 2026	201-500	189 contacts →
	Strong evidence “The leader in Modular Cleanroom Systems AES is the leader in design, construction, and manufacture of modular cleanroom systems and custom cleanroom equipment for life science and…” Source: RevenueBase Database · checked Sep 30, 2026
8	Brilliant General Maintenance, INC	Partial evidence	San Jose, CA, United StatesHQ checked Sep 30, 2026	1,001-5,000	189 contacts →
	Partial evidence “Brilliant General Maintenance, Inc excels in delivering top-tier janitorial services for commercial spaces, including cleanrooms, office buildings, manufacturing facilities, and…” Source: RevenueBase Database · checked Sep 30, 2026
9	BASX	Partial evidence	Redmond, OR, United StatesHQ checked Sep 30, 2026	501-1,000	187 contacts →
	Partial evidence “BASX is an industry leader in the manufacturing of high efficiency data center cooling solutions, cleanroom systems, custom HVAC systems and modular solutions.” Source: RevenueBase Database · checked Sep 30, 2026
10	Medbio, LLC	Partial evidence	Grand Rapids, MI, United StatesHQ checked Sep 30, 2026	201-500	175 contacts →
	Partial evidence “Medbio is an ISO 13485:2016 certified, FDA registered contract manufacturer offering innovative manufacturing solutions for the medical device and biotech industries.” Source: RevenueBase Database · checked Sep 30, 2026
11	Ecolab Life Sciences	Partial evidence	St. Paul, MN, United StatesHQ checked Sep 30, 2026	201-500	163 contacts →
	Partial evidence “Ecolab Life Sciences offers unparalleled cleaning and advanced contamination control expertise to pharmaceutical and personal care manufacturers across the globe.” Source: RevenueBase Database · checked Sep 30, 2026
12	Espec North America	Partial evidence	Hudsonville, MI, United StatesHQ checked Sep 30, 2026	51-200	155 contacts →
	Partial evidence “ESPEC North America builds quality test chambers in the United States as part of the ESPEC Group, which is the largest organizations solely dedicated to the manufacture of…” Source: RevenueBase Database · checked Sep 30, 2026
13	Germfree	Indirect evidence	Ormond Beach, FL, United StatesHQ checked Sep 30, 2026	51-200	139 contacts →
	Indirect evidence “Germfree provides controlled aseptic environments as well as primary and secondary containment to serve the rigorous demands of our clients.” Source: RevenueBase Database · checked Sep 30, 2026
14	Production Automation Corporation	Partial evidence	Minnetonka, MN, United StatesHQ checked Sep 30, 2026	51-200	138 contacts →
	Partial evidence “Production Automation Corporation (PAC) is a trusted, single-source distributor supporting manufacturers across the electronics, medical device, aerospace, and pharmaceutical…” Source: RevenueBase Database · checked Sep 30, 2026
15	ATG Construction Services	Indirect evidence	Hillsboro, OR, United StatesHQ checked Sep 30, 2026	501-1,000	129 contacts →
	Indirect evidence “At ATG, our pledge is to provide quality and value-added construction services to our partners by delivering successful projects and creating long-lasting relationships.” Source: RevenueBase Database · checked Sep 30, 2026
16	Subzero Engineering	Indirect evidence	Salt Lake City, UT, United StatesHQ checked Sep 30, 2026	51-200	129 contacts →
	Indirect evidence “Subzero ensures a superior customer experience by applying unique product designs, quick turnaround engineering, and in-house installation teams.” Source: RevenueBase Database · checked Sep 30, 2026
17	The Baker Company	Indirect evidence	Sanford, ME, United StatesHQ checked Sep 30, 2026	51-200	124 contacts →
	Indirect evidence “For more than 60 years, Baker has helped advance science, discovery and clinical care by pioneering innovative solutions for air containment, contamination control and controlled…” Source: RevenueBase Database · checked Sep 30, 2026
18	Texwipe	Partial evidence	Kernersville, NC, United StatesHQ checked Sep 30, 2026	10001+	117 contacts →
	Partial evidence “Texwipe, an ITW company, is the worldwide leader in supplying contamination control and cleaning products for critical clean environments in the manufacture of pharmaceuticals…” Source: RevenueBase Database · checked Sep 30, 2026
19	Veltek Associates, INC	Indirect evidence	Malvern, PA, United StatesHQ checked Sep 30, 2026	51-200	112 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
20	Terra Universal, INC	Indirect evidence	Fullerton, CA, United StatesHQ checked Sep 30, 2026	201-500	107 contacts →
	Indirect evidence “Terra Universal is the global leader of Critical Environment Solutions®.” Source: RevenueBase Database · checked Sep 30, 2026
21	MME Group INC	Partial evidence	St. Paul, MN, United StatesHQ checked Sep 30, 2026	51-200	97 contacts →
	Partial evidence “MME group is a box build contract manufacturer with full supply chain management and control.” Source: RevenueBase Database · checked Sep 30, 2026
22	Environmental Specialties, LLC	Partial evidence	Raleigh, NC, United StatesHQ checked Sep 30, 2026	51-200	92 contacts →
	Partial evidence “Founded in 1972, Environmental Specialties designs, manufactures, installs and services a diverse line of controlled environmental chambers that maintain precise conditions for a…” Source: RevenueBase Database · checked Sep 30, 2026
23	Paradigm Manufacturing	Indirect evidence	Hutto, TX, United StatesHQ checked Sep 30, 2026	201-500	90 contacts →
	Indirect evidence “ISO 9001:2015 ∙ Build-to-print Precision Sheet Metal, CNC Machining, and Clean Room Assembly for the Semiconductor Industry ∙ Headquartered in Hutto, Texas ∙ Est.” Source: RevenueBase Database · checked Sep 30, 2026
24	Berkshire Corporation	Partial evidence	Great Barrington, MA, United StatesHQ checked Sep 30, 2026	501-1,000	86 contacts →
	Partial evidence “Berkshire Corporation is a Global Innovator of Contamination Control Products and Cleanroom Supplies for Critical and Controlled Environments.” Source: RevenueBase Database · checked Sep 30, 2026
25	Cleanspace	Partial evidence	Fort Washington, PA, United StatesHQ checked Sep 30, 2026	501-1,000	85 contacts →
	Partial evidence “CleanSpace – Concept Through Commercialization At CleanSpace, we don’t just build cleanrooms-we deliver operational readiness.” Source: RevenueBase Database · checked Sep 30, 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 manufacturers. 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 manufacturers.
Partial evidence: Its own public description names part of cleanroom manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cleanroom manufacturers. 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 502 cleanroom manufacturers based in the United States

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Cleanroom manufacturers based in the United States at a glance

As of Sep 30, 2026

37.5%Verified-email coverage

19.7Average contacts per company

11-50Median size (employees)

1.4%Largest-city concentration · Grand Rapids

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

173

11-50

191

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 502 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 manufacturers, 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 the United States whose own description of what they do matches “cleanroom manufacturers”. 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 manufacturers), 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 manufacturers, and records with no verified work email. Companies headquartered outside United States 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, 3,714 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 30, 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 manufacturers, 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 manufacturers are there based in the United States?

RevenueBase identified 502 cleanroom manufacturers headquartered in the United States 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?

Kewaunee Scientific Corp, headquartered in Statesville, tops this list with the largest team on record.

Which city has the most cleanroom manufacturers?

Grand Rapids leads with 7 headquartered companies, followed by Dallas (6) and Houston (6).

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 3,714 verified decision-maker contacts tracked across these 502 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 30, 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.