Company lists · Data refreshed September 2026

Top 25 Injection molded plastic parts manufacturers based in the United States

Name: Injection molded plastic parts 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 17, 2026 2,147 companies tracked

RevenueBase identified 2,147 injection molded plastic parts manufacturers headquartered in the United States as of September 2026 and tracks 54,071 professional contacts across them, including 14,913 with verified work emails. Grand Rapids is the largest hub.

This list covers injection molded plastic parts 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 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

2,147Companies

54,071Contacts tracked

14,913Verified emails

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The 25 largest injection molded plastic parts manufacturers based in the United States

Ranked by team size

Top 25 of 2,147 injection molded plastic parts manufacturers 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 injection molded plastic parts 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	Milacron	Strong evidence	Batavia, OH, United StatesHQ checked Sep 17, 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 17, 2026
2	US Farathane	Strong evidence	Auburn Hills, MI, United StatesHQ checked Sep 17, 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 17, 2026
3	SMC LTD	Indirect evidence	Somerset, WI, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,072 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
4	Technimark LLC	Strong evidence	Asheboro, NC, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,006 contacts →
	Strong 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 17, 2026
5	MICRO	Strong evidence	Somerset, NJ, United StatesHQ checked Sep 17, 2026	501-1,000	723 contacts →
	Strong evidence “MICRO is a full service contract manufacturer that draws on more than 80 years of experience in medical device assembly, precision metal stamping, insert and injection molding…” Source: RevenueBase Database · checked Sep 17, 2026
6	Trend Technologies	Strong evidence	Chino, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	601 contacts →
	Strong evidence “Trend Technologies is a vertically integrated mechanical solutions provider specializing in the areas of metal stamping, metal fabrication and injection molding.” Source: RevenueBase Database · checked Sep 17, 2026
7	Tessy Plastics Corp	Strong evidence	Skaneateles, NY, United StatesHQ checked Sep 17, 2026	1,001-5,000	499 contacts →
	Strong evidence “Founded in 1973, Tessy Plastics is a global contract manufacturer headquartered in Skaneateles, NY, specializing in injection molding and custom automated assembly solutions.” Source: RevenueBase Database · checked Sep 17, 2026
8	Flambeau, INC	Indirect evidence	Baraboo, WI, United StatesHQ checked Sep 17, 2026	1,001-5,000	495 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
9	Royal Technologies Corp	Indirect evidence	Hudsonville, MI, United StatesHQ checked Sep 17, 2026	1,001-5,000	492 contacts →
	Indirect 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 17, 2026
10	Evco Plastics	Indirect evidence	Deforest, WI, United StatesHQ checked Sep 17, 2026	1,001-5,000	489 contacts →
	Indirect evidence “Precision.” Source: RevenueBase Database · checked Sep 17, 2026
11	Spectrum Plastics Group, A Dupont Business	Strong evidence	Wilmington, DE, United StatesHQ checked Sep 17, 2026	1,001-5,000	487 contacts →
	Strong evidence “Acquired in August 2023 by DuPont, Spectrum’s history spans over 60 years of applications expertise including precision extrusion, specialty injection molding, blown film…” Source: RevenueBase Database · checked Sep 17, 2026
12	Jones Plastic And Engineering	Strong evidence	Louisville, KY, United StatesHQ checked Sep 17, 2026	1,001-5,000	459 contacts →
	Strong evidence “Jones Plastic is known not only for our molding expertise, such as pioneering the use of gas assist, high speed molding in the early 90’s, but also for our ability to help…” Source: RevenueBase Database · checked Sep 17, 2026
13	Mack Molding Company	Partial evidence	Arlington, VT, United StatesHQ checked Sep 17, 2026	1,001-5,000	453 contacts →
	Partial evidence “Mack Molding Co, headquartered in Arlington, VT, provides design through FDA-approved manufacturing services to the medical, commercial, computer & business equipment, energy and…” Source: RevenueBase Database · checked Sep 17, 2026
14	Montaplast Of North America	Indirect evidence	Frankfort, KY, United StatesHQ checked Sep 17, 2026	501-1,000	399 contacts →
	Indirect evidence “Founded in 1958 by Albert Stulz Sr.” Source: RevenueBase Database · checked Sep 17, 2026
15	Century Mold Co. INC	Strong evidence	Rochester, NY, United StatesHQ checked Sep 17, 2026	1,001-5,000	375 contacts →
	Strong evidence “Century Mold is a leading North American plastic injection molder who dominates the automotive industry.” Source: RevenueBase Database · checked Sep 17, 2026
16	Sybridge Technologies	Strong evidence	Itasca, IL, United StatesHQ checked Sep 17, 2026	1,001-5,000	347 contacts →
	Strong evidence “SyBridge Technologies is a full-lifecycle injection mold tooling partner trusted by leading manufacturers across healthcare, packaging, consumer goods, mobility, and industrial…” Source: RevenueBase Database · checked Sep 17, 2026
17	Plastic Products Company INC	Partial evidence	Lindstrom, MN, United StatesHQ checked Sep 17, 2026	501-1,000	347 contacts →
	Partial evidence “At Plastic Products Company (PPC), we are committed to eagerly serving your needs.” Source: RevenueBase Database · checked Sep 17, 2026
18	PEXCO	Strong evidence	Alpharetta, GA, United StatesHQ checked Sep 17, 2026	501-1,000	332 contacts →
	Strong evidence “Pexco is a leading manufacturer of high-performance plastic solutions engineered for manufacturers and end-users across North America.” Source: RevenueBase Database · checked Sep 17, 2026
19	Plastikon Industries INC	Strong evidence	Hayward, CA, United StatesHQ checked Sep 17, 2026	201-500	325 contacts →
	Strong evidence “PLASTIKON INDUSTRIES was established in 1982 with the mission to be recognized as a world-leading plastic and contract manufacturer.” Source: RevenueBase Database · checked Sep 17, 2026
20	Engineered Plastic Components	Strong evidence	West Des Moines, IA, United StatesHQ checked Sep 17, 2026	1,001-5,000	308 contacts →
	Strong evidence “EPC is your one-stop shop for your plastic injection molded products.” Source: RevenueBase Database · checked Sep 17, 2026
21	Creative Liquid Coatings	Indirect evidence	Kendallville, IN, United StatesHQ checked Sep 17, 2026	501-1,000	306 contacts →
	Indirect evidence “Here at Creative Liquid Coatings we do far more than just liquid coatings.” Source: RevenueBase Database · checked Sep 17, 2026
22	EG Industries Leader In Plastic Injection Molding, Tooling, And Automation	Indirect evidence	Circleville, OH, United StatesHQ checked Sep 17, 2026	501-1,000	296 contacts →
	Indirect evidence “EG Industries was founded in 1981 as a Tier 1 supplier to the automotive industry.” Source: RevenueBase Database · checked Sep 17, 2026
23	Vaupell	Indirect evidence	Everett, WA, United StatesHQ checked Sep 17, 2026	501-1,000	276 contacts →
	Indirect evidence “For 75+ years Vaupell has been providing global precision components and assemblies to top-tier OEMs, leading growth companies, and start-ups for the aerospace, medical, and the…” Source: RevenueBase Database · checked Sep 17, 2026
24	Penn United Technologies, INC	Indirect evidence	Cabot, PA, United StatesHQ checked Sep 17, 2026	501-1,000	254 contacts →
	Indirect evidence “Penn United provides MANUFACTURING SOLUTIONS for customers needing precision components or precision-assembled products.” Source: RevenueBase Database · checked Sep 17, 2026
25	Tasus Corporation	Indirect evidence	Bloomington, IN, United StatesHQ checked Sep 17, 2026	201-500	242 contacts →
	Indirect 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 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: injection molded plastic parts 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 injection molded plastic parts manufacturers.
Partial evidence: Its own public description names part of injection molded plastic parts manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name injection molded plastic parts 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 2,147 injection molded plastic parts manufacturers based in the United States

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Injection molded plastic parts manufacturers based in the United States at a glance

As of Sep 17, 2026

27.6%Verified-email coverage

25.2Average contacts per company

11-50Median size (employees)

1.2%Largest-city concentration · Grand Rapids

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

543

11-50

805

51-200

565

201-500

151

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 2,147 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 injection molded plastic parts 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 “injection molded plastic parts 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 injection molded plastic parts 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 injection molded plastic parts 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, 14,913 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.

Injection molded plastic parts manufacturers by metro

Injection molded plastic parts manufacturers in Grand Rapids25

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 injection molded plastic parts 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 injection molded plastic parts manufacturers are there based in the United States?

RevenueBase identified 2,147 injection molded plastic parts 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?

Milacron, headquartered in Batavia, tops this list with the largest team on record.

Which city has the most injection molded plastic parts manufacturers?

Grand Rapids leads with 25 headquartered companies, followed by Erie (16) and Rochester (16).

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 14,913 verified decision-maker contacts tracked across these 2,147 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.