Company lists · Data refreshed September 2026

Top 25 Automotive quality control companies based in the United States

Name: Automotive quality control companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 189 companies tracked

RevenueBase identified 189 automotive quality control companies headquartered in the United States as of September 2026 and tracks 21,161 professional contacts across them, including 7,322 with verified work emails. Houston is the largest hub.

This list covers automotive quality control companies 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 16, 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 16, 2026 86% judged on-target in blind review

189Companies

21,161Contacts tracked

7,322Verified emails

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The 25 largest automotive quality control companies based in the United States

Ranked by team size

Top 25 of 189 automotive quality control companies based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to automotive quality control companies: 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	UL Solutions	Indirect evidence	Northbrook, IL, United StatesHQ checked Sep 16, 2026	10001+	12,316 contacts →
	Indirect evidence “A global leader in applied safety science, UL Solutions (NYSE: ULS) transforms safety, security and sustainability challenges into opportunities for customers in more than 110…” Source: RevenueBase Database · checked Sep 16, 2026
2	Stratosphere Quality	Partial evidence	Fishers, IN, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,553 contacts →
	Partial evidence “Stratosphere Quality, founded in 2009, is a major global provider of quality assurance and outsourcing solutions, such as sorting and inspection services, to manufacturers of…” Source: RevenueBase Database · checked Sep 16, 2026
3	Applied Technical Services, LLC	Indirect evidence	Marietta, GA, United StatesHQ checked Sep 16, 2026	1,001-5,000	890 contacts →
	Indirect evidence “Applied Technical Services assists commercial and industrial clients by providing inspection, testing, consulting engineering, and calibration services.” Source: RevenueBase Database · checked Sep 16, 2026
4	TÜV Rheinland North America	Indirect evidence	Boxborough, MA, United StatesHQ checked Sep 16, 2026	501-1,000	712 contacts →
	Indirect evidence “TÜV Rheinland is a world leader in testing, inspection and certification services for a wide variety of industries.” Source: RevenueBase Database · checked Sep 16, 2026
5	Vayan Group, LLC	Strong evidence	Sterling Heights, MI, United StatesHQ checked Sep 16, 2026	1,001-5,000	476 contacts →
	Strong evidence “Vayan Group, LLC is a leading provider of technology-driven quality assurance solutions for OEMs, Tier 1 and Tier 2 suppliers across the automotive, aerospace, electronics…” Source: RevenueBase Database · checked Sep 16, 2026
6	Smithers	Indirect evidence	Akron, OH, United StatesHQ checked Sep 16, 2026	501-1,000	310 contacts →
	Indirect evidence “Founded in 1925 and headquartered in Akron, Ohio, Smithers is a multinational provider of testing, consulting, information, and certification services.” Source: RevenueBase Database · checked Sep 16, 2026
7	Kett Engineering Corporation	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	501-1,000	250 contacts →
	Partial evidence “Kett Engineering Corporation has been operating for over 60 years and has spent the past 28 years dedicating its services to supporting the automotive testing and staffing needs…” Source: RevenueBase Database · checked Sep 16, 2026
8	Intertek Building & Construction	Indirect evidence	Arlington Heights, IL, United StatesHQ checked Sep 16, 2026	10001+	241 contacts →
	Indirect evidence “Market Access.” Source: RevenueBase Database · checked Sep 16, 2026
9	MGA Research Corporation	Indirect evidence	Akron, NY, United StatesHQ checked Sep 16, 2026	201-500	224 contacts →
	Indirect evidence “MGA is recognized worldwide as one of the leading independent providers of testing services and equipment.” Source: RevenueBase Database · checked Sep 16, 2026
10	PRO QC International	Partial evidence	Mchenry, IL, United StatesHQ checked Sep 16, 2026	501-1,000	211 contacts →
	Partial evidence “Pro QC International provides tailored quality solutions with a human touch in 100 countries.” Source: RevenueBase Database · checked Sep 16, 2026
11	Attc Manufacturing	Indirect evidence	Tell City, United StatesHQ checked Sep 16, 2026	501-1,000	205 contacts →
	Indirect evidence “Established in we specialize in manufacturing brake drums,brake rotors, engine caps, steering knuckles, carriers, and differential cases.” Source: RevenueBase Database · checked Sep 16, 2026
12	Qualitylogic	Partial evidence	Boise, ID, United StatesHQ checked Sep 16, 2026	51-200	157 contacts →
	Partial evidence “QualityLogic delivers full spectrum QA products and services to technology companies in rapidly evolving markets, or where transformative technologies are changing the world.” Source: RevenueBase Database · checked Sep 16, 2026
13	Team Quality Services	Indirect evidence	Auburn, IN, United StatesHQ checked Sep 16, 2026	201-500	132 contacts →
	Indirect evidence “We're there, so our customers don’t have to be.” Source: RevenueBase Database · checked Sep 16, 2026
14	Aeis LLC	Partial evidence	South Plainfield, NJ, United StatesHQ checked Sep 16, 2026	201-500	116 contacts →
	Partial evidence “AEIS, LLC is a testing, inspection, and certification (TIC) agency that increases quality and safety outcomes for major infrastructure.” Source: RevenueBase Database · checked Sep 16, 2026
15	Certerra	Partial evidence	Las Vegas, NV, United StatesHQ checked Sep 16, 2026	1,001-5,000	114 contacts →
	Partial evidence “Certerra provides technology-enabled testing, inspection, and certification services for new product development, engineering solutions to manage assets, and quality assurance for…” Source: RevenueBase Database · checked Sep 16, 2026
16	Sustained Quality	Strong evidence	South Bend, IN, United StatesHQ checked Sep 16, 2026	51-200	83 contacts →
	Strong evidence “Sustained Quality has been a trusted partner in quality since 2007, delivering inspection, sorting, rework/repair, engineering, and containment services to the automotive…” Source: RevenueBase Database · checked Sep 16, 2026
17	ALS Life Sciences	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	n/a	78 contacts →
	Indirect evidence “ALS is a leading testing, inspection, certification and verification company servicing multiple industries globally.” Source: RevenueBase Database · checked Sep 16, 2026
18	TRP Laboratories	Indirect evidence	Troy, MI, United StatesHQ checked Sep 16, 2026	51-200	70 contacts →
	Indirect evidence “TRP Laboratories provides standard and custom testing services across the United States.” Source: RevenueBase Database · checked Sep 16, 2026
19	ONE Guard Inspections	Indirect evidence	Plano, TX, United StatesHQ checked Sep 16, 2026	11-50	50 contacts →
	Indirect evidence “Our extensive nationwide network, innovative services, and cutting-edge technology make your inspection process faster, more convenient, and hassle-free.” Source: RevenueBase Database · checked Sep 16, 2026
20	Quality Team 1	Partial evidence	Highland Park, MI, United StatesHQ checked Sep 16, 2026	201-500	49 contacts →
	Partial evidence “Quality Team 1 is an international ISO 9001-2008 registered service company specializing in inspection and containment with locations in the United States, Canada, and Mexico.” Source: RevenueBase Database · checked Sep 16, 2026
21	Alliance Infinite	Partial evidence	New York, United StatesHQ checked Sep 16, 2026	1,001-5,000	48 contacts →
	Partial evidence “Alliance Infinite has consistently maintained its position among the world’s very best quality service providers for Third Party Inspection, Testing, Calibration and Management…” Source: RevenueBase Database · checked Sep 16, 2026
22	BAY Area Compliance Laboratories, Corp	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Sep 16, 2026	11-50	45 contacts →
	Indirect evidence “Since 1996, Bay Area Compliance Laboratories Corp.” Source: RevenueBase Database · checked Sep 16, 2026
23	X-Ray Industries, INC	Indirect evidence	Troy, MI, United StatesHQ checked Sep 16, 2026	51-200	37 contacts →
	Indirect evidence “Fully committed to ensuring that customer products reach their highest standards of integrity, safety, and reliability, Applus+ XRI has positioned itself as one of the leading…” Source: RevenueBase Database · checked Sep 16, 2026
24	Supplier Inspection Services, INC	Strong evidence	Moraine, OH, United StatesHQ checked Sep 16, 2026	51-200	34 contacts →
	Strong evidence “Supplier Inspection Services, Inc.(SIS, Inc.) is a quality management support services provider that partners with companies worldwide within the Automotive, Aerospace, Appliance…” Source: RevenueBase Database · checked Sep 16, 2026
25	West Coast Inspection Services	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	51-200	33 contacts →
	Partial evidence “Our mission is to provide the highest industry standards through quality inspection & testing.” Source: RevenueBase Database · checked Sep 16, 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: automotive quality control companies. 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 automotive quality control companies.
Partial evidence: Its own public description names part of automotive quality control companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name automotive quality control companies. 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 189 automotive quality control companies based in the United States

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Automotive quality control companies based in the United States at a glance

As of Sep 16, 2026

34.6%Verified-email coverage

112.0Average contacts per company

11-50Median size (employees)

5.3%Largest-city concentration · Houston

Sep 16, 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 United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 189 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 automotive quality control companies, 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 “automotive quality control companies”. 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 automotive quality control companies), 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 automotive quality control companies, 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, 7,322 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 16, 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 automotive quality control companies, 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 automotive quality control companies are there based in the United States?

RevenueBase identified 189 automotive quality control companies 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?

UL Solutions, headquartered in Northbrook, tops this list with the largest team on record.

Which city has the most automotive quality control companies?

Houston leads with 10 headquartered companies, followed by New York (5) and Los Angeles (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 7,322 verified decision-maker contacts tracked across these 189 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 16, 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.