Company lists · Data refreshed September 2026

Top 25 Semiconductor cleanroom services based in the United States

Name: Semiconductor cleanroom services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 250 companies tracked

RevenueBase identified 250 semiconductor cleanroom services headquartered in the United States as of September 2026 and tracks 9,985 professional contacts across them, including 3,187 with verified work emails. Austin is the largest hub.

This list covers semiconductor cleanroom services 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 17, 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 17, 2026 86% judged on-target in blind review

250Companies

9,985Contacts tracked

3,187Verified emails

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The 25 largest semiconductor cleanroom services based in the United States

Ranked by team size

Top 25 of 250 semiconductor cleanroom services based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to semiconductor cleanroom services: 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	Ultra Clean Technology	Partial evidence	Hayward, CA, United StatesHQ checked Sep 17, 2026	5,001-10,000	2,287 contacts →
	Partial evidence “UltraClean Holdings, Inc.(UCT) is a global leader in semiconductor fabrication support.” Source: RevenueBase Database · checked Sep 17, 2026
2	Brooks Automation	Partial evidence	Chelmsford, MA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,695 contacts →
	Partial evidence “Brooks is a leading provider of automation solutions with over 40 years of experience in the semiconductor industry.” Source: RevenueBase Database · checked Sep 17, 2026
3	Screen SPE USA	Partial evidence	Santa Clara, CA, United StatesHQ checked Sep 17, 2026	201-500	455 contacts →
	Partial evidence “A Wholly-owned subsidiary of Screen Holdings Co, Ltd, of Kyoto, Japan, SCREEN SPE USA, LLC provides sales, service and support for SCREEN's market share leading semiconductor…” Source: RevenueBase Database · checked Sep 17, 2026
4	Polar Semiconductor	Partial evidence	Bloomington, MN, United StatesHQ checked Sep 17, 2026	501-1,000	450 contacts →
	Partial evidence “Located in Bloomington, Minnesota, Polar Semiconductor, LLC has decades of experience in high-performance, automotive-grade semiconductor manufacturing.” Source: RevenueBase Database · checked Sep 17, 2026
5	Pentagon Technologies	Indirect evidence	Hayward, CA, United StatesHQ checked Sep 17, 2026	501-1,000	385 contacts →
	Indirect evidence “Pentagon Technologies, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
6	Msr-Fsr, LLC	Indirect evidence	Chandler, AZ, United StatesHQ checked Sep 17, 2026	501-1,000	364 contacts →
	Indirect evidence “MSR-FSR, Materials Support Resources and Field Support Resources, provides on-site services with certified FSEs, and off-site programs with regional service centers, that are…” Source: RevenueBase Database · checked Sep 17, 2026
7	Controlled Contamination Services	Partial evidence	Dallas, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	253 contacts →
	Partial 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 17, 2026
8	Azzur Group	Partial evidence	Burlington, MA, United StatesHQ checked Sep 17, 2026	51-200	224 contacts →
	Partial evidence “Visit chrysalisgxp.com for GMP-ready cleanrooms and services.” Source: RevenueBase Database · checked Sep 17, 2026
9	AES Cleanroom Technology	Partial evidence	Montgomeryville, PA, United StatesHQ checked Sep 17, 2026	201-500	189 contacts →
	Partial 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 17, 2026
10	Brilliant General Maintenance, INC	Partial evidence	San Jose, CA, United StatesHQ checked Sep 17, 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 17, 2026
11	Ulvac Technologies, INC	Indirect evidence	Methuen, MA, United StatesHQ checked Sep 17, 2026	51-200	181 contacts →
	Indirect evidence “ULVAC Technologies, Inc.(ISO 9001:2008) was established in 1992 as the US subsidiary of ULVAC, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
12	Komico USA	Partial evidence	Austin, TX, United StatesHQ checked Sep 17, 2026	201-500	145 contacts →
	Partial evidence “KoMiCo, a leading company of precision cleaning and special coating in semiconductor industry, was founded May 2007.” Source: RevenueBase Database · checked Sep 17, 2026
13	ISE Labs ASE	Partial evidence	Fremont, CA, United StatesHQ checked Sep 17, 2026	51-200	132 contacts →
	Partial evidence “ISE Labs is a one-stop semiconductor engineering service provider.” Source: RevenueBase Database · checked Sep 17, 2026
14	JST	Partial evidence	Meridian, ID, United StatesHQ checked Sep 17, 2026	201-500	123 contacts →
	Partial evidence “JST is a world class supplier of wet benches for the semiconductor, opto-electronics, biomedical, food processing, and other clean industries.” Source: RevenueBase Database · checked Sep 17, 2026
15	Texwipe	Indirect evidence	Kernersville, NC, United StatesHQ checked Sep 17, 2026	10001+	117 contacts →
	Indirect 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 17, 2026
16	Terra Universal, INC	Indirect evidence	Fullerton, CA, United StatesHQ checked Sep 17, 2026	201-500	107 contacts →
	Indirect evidence “Terra Universal is the global leader of Critical Environment Solutions®.” Source: RevenueBase Database · checked Sep 17, 2026
17	Cleanspace	Partial evidence	Fort Washington, PA, United StatesHQ checked Sep 17, 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 17, 2026
18	Advancetec, LLC	Partial evidence	Richmond, VA, United StatesHQ checked Sep 17, 2026	51-200	84 contacts →
	Partial evidence “AdvanceTEC is the leader in cleanroom design, construction, off-site prefabrication, and modularization.” Source: RevenueBase Database · checked Sep 17, 2026
19	Advanced Cleanroom Microclean ACM	Partial evidence	Santa Ana, CA, United StatesHQ checked Sep 17, 2026	501-1,000	82 contacts →
	Partial evidence “Advanced Cleanroom Microclean is an ISO 9001:2015 certified cleanroom cleaning and facility service company.” Source: RevenueBase Database · checked Sep 17, 2026
20	G-Con	Partial evidence	College Station, TX, United StatesHQ checked Sep 17, 2026	51-200	77 contacts →
	Partial evidence “G-CON Manufacturing, Inc.’s prefabricated, turnkey cleanroom systems represent a significant transition to forward thinking in pharmaceutical and biopharmaceutical processing.” Source: RevenueBase Database · checked Sep 17, 2026
21	ACM Research, INC	Indirect evidence	Fremont, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	70 contacts →
	Indirect evidence “Founded in 1998 in Silicon Valley, ACM Research, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
22	Icom Mechanical INC	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 17, 2026	51-200	70 contacts →
	Indirect evidence “Founded in 1981 in San Jose, California, ICOM has provided The Silicon Valley and other important technology communities with the highest level of products and services for nearly…” Source: RevenueBase Database · checked Sep 17, 2026
23	Uniclean Cleanroom Services	Partial evidence	Maplewood, NJ, United StatesHQ checked Sep 17, 2026	5,001-10,000	69 contacts →
	Partial evidence “Leading Supplier of specialty uniforms and services concentrating on contamination control for cleanroom environments including but not limited to sterile and non-sterile…” Source: RevenueBase Database · checked Sep 17, 2026
24	Foamtec International WCC	Indirect evidence	Waco, TX, United StatesHQ checked Sep 17, 2026	n/a	64 contacts →
	Indirect evidence “Foamtec's mission is to enable contamination control professionals to improve particle control in clean rooms by solving surface contamination challenges.” Source: RevenueBase Database · checked Sep 17, 2026
25	Persys Group	Partial evidence	Santa Cruz, CA, United StatesHQ checked Sep 17, 2026	201-500	49 contacts →
	Partial evidence “Persys is an industry leader in integrative solutions for parts cleaning, refurbishment, and technical services for assemblies and machine parts in the semiconductor, magnetic…” Source: RevenueBase Database · checked Sep 17, 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: semiconductor cleanroom services. 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 semiconductor cleanroom services.
Partial evidence: Its own public description names part of semiconductor cleanroom services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name semiconductor cleanroom services. 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 250 semiconductor cleanroom services based in the United States

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Semiconductor cleanroom services based in the United States at a glance

As of Sep 17, 2026

31.9%Verified-email coverage

39.9Average contacts per company

11-50Median size (employees)

4.0%Largest-city concentration · Austin

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

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 250 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 semiconductor cleanroom services, 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 “semiconductor cleanroom services”. 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 semiconductor cleanroom services), 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 semiconductor cleanroom services, 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, 3,187 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 17, 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 semiconductor cleanroom services, 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 semiconductor cleanroom services are there based in the United States?

RevenueBase identified 250 semiconductor cleanroom services 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?

Ultra Clean Technology, headquartered in Hayward, tops this list with the largest team on record.

Which city has the most semiconductor cleanroom services?

Austin leads with 10 headquartered companies, followed by Dallas (7) and Fremont (7).

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 3,187 verified decision-maker contacts tracked across these 250 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 17, 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.