Company lists · Data refreshed October 2026

Top 25 Composites injection molding services based in the United States

RevenueBase identified 295 company matches for composites injection molding services associated with the United States as of October 2026 and tracks 5,805 professional contacts across them, including 1,742 with verified work emails. Longmont is the largest hub.

This list covers company matches for composites injection molding services associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 23, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Oct 23, 2026 How this list was built
295Companies
5,805Contacts tracked
1,742Verified emails
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The 25 largest composites injection molding services based in the United States

Ranked by team size
Top 25 of 295 company matches for composites injection molding services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 23, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchAshtabula, OH, United StatesHQ recorded Oct 23, 20261,001-5,000457 contacts →

Exact match

“MFG's composites expertise is a result of 70 years of service to customers in many industries.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
2Exact matchWest Des Moines, IA, United StatesHQ recorded Oct 23, 20261,001-5,000315 contacts →

Exact match

“EPC is your one-stop shop for your plastic injection molded products.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
3Exact matchMacomb, MI, United StatesHQ recorded Oct 23, 2026201-500190 contacts →

Exact match

“From Mind to Manufacturing® PTI Engineered Plastics is a leading innovator that utilizes the latest advances in the field of plastic injection molding.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
4Exact matchIndianapolis, IN, United StatesHQ recorded Oct 23, 2026201-500178 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
5Exact matchBrookings, SD, United StatesHQ recorded Oct 23, 2026201-500151 contacts →

Exact match

“In 1975, a leading custom injection molding company, Falcon Plastics, Inc.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
6Exact matchHarborcreek, PA, United StatesHQ recorded Oct 23, 2026201-500132 contacts →

Exact match

“For more than 50 years, we have been offering complete custom injection molding solutions as a core service.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
7Exact matchEl Paso, TX, United StatesHQ recorded Oct 23, 202651-200132 contacts →

Exact match

“Plastic Molding Technology solves mission-critical needs to reduce supply chain risk and complexity.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
8Exact matchMeadville, PA, United StatesHQ recorded Oct 23, 2026201-500127 contacts →

Exact match

“Founded in 1962, C&J Industries has evolved into a premier all-in-one plastic injection molding company.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
9Exact matchWolfeboro, NH, United StatesHQ recorded Oct 23, 2026201-500121 contacts →

Exact match

“For more than 40 years, PSI Molded Plastics has helped customers bring complex plastic components and assemblies to market through advanced injection molding, engineering…”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
10Exact matchRochester, NY, United StatesHQ recorded Oct 23, 2026201-500114 contacts →

Exact match

“Leading design and builder of injection molding tools, injection molding of plastics parts, and simple to complex assemblies including value added processes such as hot stamping…”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
11Exact matchMchenry, IL, United StatesHQ recorded Oct 23, 2026201-500109 contacts →

Exact match

“Fabrïk Molded Plastics is a full service custom injection molding supplier.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
12Exact matchGrand Rapids, MI, United StatesHQ recorded Oct 23, 202651-20097 contacts →

Exact match

“Paragon is a full-service mold supplier with design and build capability.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
13Exact matchSpring Lake, MI, United StatesHQ recorded Oct 23, 202651-20096 contacts →

Exact match

“Custom Injection Molding Automatic Molding - Tight Tolerance Molding - Two Shot (2K) Molding - Insert Molding - Class Clean Room Assembly - Sonic Welding - Robotic Assembly -…”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
14Exact matchSturgis, MI, United StatesHQ recorded Oct 23, 2026201-50088 contacts →

Exact match

“SMP is your innovative partner in plastic injection molding since 1966.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
15Exact matchMinneapolis, MN, United StatesHQ recorded Oct 23, 202651-20071 contacts →

Exact match

“Employee-owned Aprios is a custom plastic-injection molder and digital manufacturer of high-precision, close-tolerance parts and components for medical device, filtration…”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
16Exact matchNew Berlin, WI, United StatesHQ recorded Oct 23, 202651-20067 contacts →

Exact match

“New Berlin Plastics delivers what we promise, when it’s promised, whether you’re looking for help launching a new product or transferring tooling for an existing part.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
17Exact matchOpelika, AL, United StatesHQ recorded Oct 23, 202651-20066 contacts →

Exact match

“Cumberland Plastic Solutions is a world-class custom injection molder founded in 2006 and located in Opelika, AL.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
18Exact matchLong Beach, CA, United StatesHQ recorded Oct 23, 202651-20063 contacts →

Exact match

“Custom injection molding, tooling, product development, prototypes, material formulations, application analysis”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
19Exact matchMacedonia, OH, United StatesHQ recorded Oct 23, 202651-20059 contacts →

Exact match

“Your complex plastic molding projects - SOLVED!”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
20Exact matchSarasota, FL, United StatesHQ recorded Oct 23, 2026201-50055 contacts →

Exact match

“Marine Concepts / Design Concepts is a highly awarded composites manufacturer primarily engaged, Design, Engineering, Plugs, Molds, 3 & 5- Axis Milling, and First article parts…”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
21Exact matchElgin, IL, United StatesHQ recorded Oct 23, 202651-20053 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
22Exact matchMinneapolis, MN, United StatesHQ recorded Oct 23, 202651-20052 contacts →

Exact match

“Any molder can purchase the latest equipment and technology, yet Steinwall also emphasizes the human element to ensure the best overall customer experience.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
23Exact matchChesterfield, MI, United StatesHQ recorded Oct 23, 2026201-50051 contacts →

Exact match

“Eclipse Mold specializes in mold making and plastic injection molding.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
24Exact matchPreston, IA, United StatesHQ recorded Oct 23, 202651-20051 contacts →

Exact match

“Plastics Unlimited was established in 1993 by Terry and Nancy Kieffer.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
25Exact matchAurora, OH, United StatesHQ recorded Oct 23, 202651-20050 contacts →

Exact match

“An industry leader with more than 40 years experience, Automation Plastics boasts a list of Fortune 500 clientele with niches in the automotive, consumer products, medical…”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase

Showing 25 of 295 composites injection molding services based in the United States

See the full list, filter by size, metro and specialty, and access 1,742 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Composites injection molding services based in the United States at a glance

As of Oct 23, 2026
30.0%Verified-email coverage
19.7Average contacts per company
11-50Median size (employees)
1.7%Largest-city concentration · Longmont
Oct 23, 2026Page data refreshed

Companies by employee count

1-10
83
11-50
109
51-200
78
201-500
20
501-1,000
2
1,001-5,000
2

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 295 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “composites injection molding services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,742 professional contacts with verified work emails across the full matched dataset. 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 October 23, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “composites injection molding services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many composites injection molding services are there based in the United States?

RevenueBase identified 295 company matches for composites injection molding services associated with the United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Molded Fiber Glass MFG Companies tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most composites injection molding services?

Longmont leads with 5 company records, followed by Addison (3) and Corona (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,742 professional contacts with verified work emails tracked across these 295 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 23, 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 SmartSearch, 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.