Company lists · Data refreshed September 2026
Top 25 Automotive injection molded plastic manufacturers based in the United States
RevenueBase identified 614 automotive injection molded plastic manufacturers headquartered in the United States as of September 2026 and tracks 28,762 professional contacts across them, including 5,632 with verified work emails. Grand Rapids is the largest hub.
This list covers automotive injection molded 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 29, 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.
The 25 largest automotive injection molded plastic manufacturers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 399 contacts → | ||||
Indirect evidence “Founded in 1958 by Albert Stulz Sr.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 375 contacts → | ||||
Strong evidence “Century Mold is a leading North American plastic injection molder who dominates the automotive industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 306 contacts → | ||||
Indirect evidence “Here at Creative Liquid Coatings we do far more than just liquid coatings.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 296 contacts → | ||||
Partial evidence “EG Industries was founded in 1981 as a Tier 1 supplier to the automotive industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 291 contacts → | ||||
Strong evidence “dlhBOWLES is a premier supplier of innovative engineered plastic solutions to many of the largest corporations and most recognizable brands around the globe in the automotive and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 242 contacts → | ||||
Partial evidence “TASUS Corporation is a Tier One supplier to Toyota Motor Manufacturing North America and a Tier Two supplier to OEM automotive and transportation markets.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 195 contacts → | ||||
Partial evidence “Minth Group stands as a global leader in the manufacturing of exterior and structural automotive parts.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 181 contacts → | ||||
Strong evidence “At PTA Plastics, we are a leading custom injection molder with a passion for precision and excellence.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 162 contacts → | ||||
Strong evidence “A full-service plastic injection molding partner providing superior solutions that redefine the meaning of successful outcomes, 70 Injection Molding presses from 40 to ton as as…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 153 contacts → | ||||
Partial evidence “FMT is your strategic partner in high-quality plastic parts manufacturing.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 149 contacts → | ||||
Indirect evidence “Eimo Technologies Inc.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 148 contacts → | ||||
Strong evidence “Chiyoda USA, a tier 1 supplier, develops, manufactures, and supplies automotive interior and exterior plastic parts.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 142 contacts → | ||||
Indirect evidence “At Ensinger's facilites in North America, we focus on processing high performance engineering polymers in several manufacturing facilities in New Jersey, Delaware, Texas…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 137 contacts → | ||||
Partial evidence “Founded in 2014, Quantum Plastics, LLC was created as a holding company by Quantum Ventures of Michigan.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 134 contacts → | ||||
Strong evidence “Since 1949, Thermotech has been a strategic custom injection molder of thermoplastic components specializing in tight tolerance and complex manufacturing.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 128 contacts → | ||||
Strong evidence “Founded in 1962, C&J Industries has evolved into a premier all-in-one plastic injection molding company.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 127 contacts → | ||||
Partial evidence “Cadillac Products Automotive Company is a recognized leader in the automotive industry with a well-earned reputation for designing, developing, and manufacturing creative…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 127 contacts → | ||||
Strong evidence “Ashley Industrial Molding (AIM) is a leading manufacturer of quality custom molded and painted plastic products and assemblies.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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 injection molded 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 injection molded plastic manufacturers.
- Partial evidence
- Its own public description names part of automotive injection molded 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 injection molded 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 614 automotive injection molded plastic manufacturers based in the United States
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Automotive injection molded plastic manufacturers based in the United States at a glance
As of Sep 29, 2026Companies by employee count
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 614 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 injection molded 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 injection molded 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 injection molded 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 injection molded 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, 5,632 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 29, 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 injection molded 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 injection molded plastic manufacturers are there based in the United States?
RevenueBase identified 614 automotive injection molded 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 injection molded plastic manufacturers?
Grand Rapids leads with 8 headquartered companies, followed by Rockford (8) and Holland (5).
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 5,632 verified decision-maker contacts tracked across these 614 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 29, 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.
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