Company lists · Data refreshed September 2026

Top 25 Automotive plastic manufacturers based in the United States

Name: Automotive plastic 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 16, 2026 1,104 companies tracked

RevenueBase identified 1,104 automotive plastic manufacturers headquartered in the United States as of September 2026 and tracks 60,888 professional contacts across them, including 12,679 with verified work emails. Grand Rapids is the largest hub.

This list covers automotive plastic 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 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

1,104Companies

60,888Contacts tracked

12,679Verified emails

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The 25 largest automotive plastic manufacturers based in the United States

Ranked by team size

Top 25 of 1,104 automotive plastic manufacturers 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 plastic 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	IAC Group	Partial evidence	Southfield, MI, United StatesHQ checked Sep 16, 2026	5,001-10,000	5,634 contacts →
	Partial evidence “Headquartered in Luxembourg, International Automotive Components (IAC) Group is a leading global supplier of automotive components and systems, including instrument panels…” Source: RevenueBase Database · checked Sep 16, 2026
2	Flex-N-Gate	Indirect evidence	Urbana, IL, United StatesHQ checked Sep 16, 2026	10001+	4,298 contacts →
	Indirect evidence “Starting with aftermarket parts in 1956 and moving into O.E.” Source: RevenueBase Database · checked Sep 16, 2026
3	SRG Global	Strong evidence	Troy, MI, United StatesHQ checked Sep 16, 2026	5,001-10,000	1,981 contacts →
	Strong evidence “SRG Global® is one of the world’s leading manufacturers of integrated, functional decorative systems for the automotive, mobility, and commercial truck industries.” Source: RevenueBase Database · checked Sep 16, 2026
4	Autokiniton	Partial evidence	New Boston, MI, United StatesHQ checked Sep 16, 2026	5,001-10,000	1,437 contacts →
	Partial evidence “At AUTOKINITON, we’re more than just an automotive supplier, we’re the backbone of vehicle performance and safety.” Source: RevenueBase Database · checked Sep 16, 2026
5	Milacron	Strong evidence	Batavia, OH, United StatesHQ checked Sep 16, 2026	5,001-10,000	1,290 contacts →
	Strong evidence “Milacron is a global leader in the manufacture, distribution, and service of highly engineered and customized systems within the plastic technology and processing industry.” Source: RevenueBase Database · checked Sep 16, 2026
6	US Farathane	Strong evidence	Auburn Hills, MI, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,163 contacts →
	Strong evidence “At US Farathane, we design and manufacture highly engineered plastic injection-molded components, make them available to you in a variety of sizes, shapes, and designs and supply…” Source: RevenueBase Database · checked Sep 16, 2026
7	Summit Polymers	Partial evidence	Portage, MI, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,150 contacts →
	Partial evidence “Summit Polymers is a leading Tier 1 Automotive Supplier of automotive interior systems.” Source: RevenueBase Database · checked Sep 16, 2026
8	Technimark LLC	Partial evidence	Asheboro, NC, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,006 contacts →
	Partial evidence “Founded in 1983, Technimark is a global leader and manufacturer of high-value injection-molded packaging and components serving the consumer packaging, healthcare and industrial…” Source: RevenueBase Database · checked Sep 16, 2026
9	Inteplast Group	Strong evidence	Livingston, NJ, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,006 contacts →
	Strong evidence “About Inteplast Group Founded in 1991, Inteplast Group is the largest manufacturer of integrated plastics in North America, offering a wide variety of quality products.” Source: RevenueBase Database · checked Sep 16, 2026
10	NYX INC	Indirect evidence	Livonia, MI, United StatesHQ checked Sep 16, 2026	501-1,000	906 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
11	Dakkota Integrated Systems	Partial evidence	Holt, MI, United StatesHQ checked Sep 16, 2026	1,001-5,000	895 contacts →
	Partial evidence “Dakkota Integrated Systems is a company with world-class products that are designed, engineered, and manufactured by a diverse team of talented employees.” Source: RevenueBase Database · checked Sep 16, 2026
12	Ugn, INC	Indirect evidence	Downers Grove, IL, United StatesHQ checked Sep 16, 2026	1,001-5,000	894 contacts →
	Indirect evidence “Founded in 1986 as a partnership between Nihon Tokushu Toryo Co.” Source: RevenueBase Database · checked Sep 16, 2026
13	JAC Products	Indirect evidence	Pontiac, MI, United StatesHQ checked Sep 16, 2026	1,001-5,000	798 contacts →
	Indirect evidence “Passions Made Possible.” Source: RevenueBase Database · checked Sep 16, 2026
14	Motus Integrated Technologies	Indirect evidence	Holland, MI, United StatesHQ checked Sep 16, 2026	1,001-5,000	684 contacts →
	Indirect evidence “Motus Integrated Technologies is a dynamic, half-billion-dollar global leader in manufacturing high-quality headliners, interior trim, and fiber solution products for the…” Source: RevenueBase Database · checked Sep 16, 2026
15	Grammer Americas	Partial evidence	Toledo, OH, United StatesHQ checked Sep 16, 2026	n/a	648 contacts →
	Partial evidence “OUR VISION Global market leader and trendsetter for offroad seating Leading global player for automotive interior components, seating for passenger and commercial vehicles and…” Source: RevenueBase Database · checked Sep 16, 2026
16	Jvis USA	Partial evidence	Shelby Township, MI, United StatesHQ checked Sep 16, 2026	1,001-5,000	602 contacts →
	Partial evidence “When it comes to the world of automotive components, JVIS has continued to be the supplier of choice for leading global brands.” Source: RevenueBase Database · checked Sep 16, 2026
17	HFI	Partial evidence	Canal Winchester, OH, United StatesHQ checked Sep 16, 2026	1,001-5,000	581 contacts →
	Partial evidence “HFI is a leading Tier II automotive supplier of high quality interior parts such as headrests, armrests, consoles, and other seating and door components.” Source: RevenueBase Database · checked Sep 16, 2026
18	Nn, INC	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 16, 2026	1,001-5,000	522 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
19	Flambeau, INC	Indirect evidence	Baraboo, WI, United StatesHQ checked Sep 16, 2026	1,001-5,000	495 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
20	Royal Technologies Corp	Partial evidence	Hudsonville, MI, United StatesHQ checked Sep 16, 2026	1,001-5,000	492 contacts →
	Partial evidence “Royal Technologies is an advanced engineering and manufacturing company serving industries as diverse as automotive, furniture, and consumer products.” Source: RevenueBase Database · checked Sep 16, 2026
21	Weathertech	Partial evidence	Bolingbrook, IL, United StatesHQ checked Sep 16, 2026	1,001-5,000	468 contacts →
	Partial evidence “Founded in 1989, WeatherTech® has long been recognized by the discerning automotive enthusiast as a supplier of automotive accessories of unparalleled quality.” Source: RevenueBase Database · checked Sep 16, 2026
22	Core Molding Technologies	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 16, 2026	1,001-5,000	441 contacts →
	Indirect evidence “Core Molding Technologies is a leading engineered materials company specializing in molded structural products, principally in building products, utilities, transportation and…” Source: RevenueBase Database · checked Sep 16, 2026
23	Cascade Engineering	Partial evidence	Grand Rapids, MI, United StatesHQ checked Sep 16, 2026	501-1,000	428 contacts →
	Partial evidence “Cascade Engineering is a manufacturer and marketer supporting multiple brands.” Source: RevenueBase Database · checked Sep 16, 2026
24	Neaton Auto Products, Mfg, INC	Partial evidence	Eaton, OH, United StatesHQ checked Sep 16, 2026	501-1,000	411 contacts →
	Partial evidence “Neaton Auto Products Manufacturing is a tier one automotive industry supplier of high quality products that impress as well as perform.” Source: RevenueBase Database · checked Sep 16, 2026
25	KI Industries, INC	Strong evidence	Berkeley, IL, United StatesHQ checked Sep 16, 2026	501-1,000	404 contacts →
	Strong evidence “KI Industries, founded in 1964, specializes in the design and manufacture of decorative plastic and die cast components for the automotive and appliance industry.” 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 plastic 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 automotive plastic manufacturers.
Partial evidence: Its own public description names part of automotive plastic manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name automotive plastic 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 1,104 automotive plastic manufacturers based in the United States

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Automotive plastic manufacturers based in the United States at a glance

As of Sep 16, 2026

20.8%Verified-email coverage

55.2Average contacts per company

11-50Median size (employees)

1.2%Largest-city concentration · Grand Rapids

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

219

11-50

372

51-200

291

201-500

115

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 1,104 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 plastic 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 “automotive plastic 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 automotive plastic 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 automotive plastic 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, 12,679 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 plastic 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 automotive plastic manufacturers are there based in the United States?

RevenueBase identified 1,104 automotive plastic 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?

IAC Group, headquartered in Southfield, tops this list with the largest team on record.

Which city has the most automotive plastic manufacturers?

Grand Rapids leads with 13 headquartered companies, followed by Troy (12) and Rockford (9).

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 12,679 verified decision-maker contacts tracked across these 1,104 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.