Company lists · Data refreshed September 2026

Top 25 Specialty engineering plastics suppliers based in the United States

Name: Specialty engineering plastics suppliers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 736 companies tracked

RevenueBase identified 736 specialty engineering plastics suppliers headquartered in the United States as of September 2026 and tracks 38,388 professional contacts across them, including 15,181 with verified work emails. Houston is the largest hub.

This list covers specialty engineering plastics suppliers 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 18, 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 18, 2026 86% judged on-target in blind review

736Companies

38,388Contacts tracked

15,181Verified emails

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The 25 largest specialty engineering plastics suppliers based in the United States

Ranked by team size

Top 25 of 736 specialty engineering plastics suppliers based in the United States, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to specialty engineering plastics suppliers: 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	Avient Corporation	Indirect evidence	Avon Lake, OH, United StatesHQ checked Sep 18, 2026	5,001-10,000	3,692 contacts →
	Indirect evidence “The world is changing in remarkable ways, creating both challenges and opportunities.” Source: RevenueBase Database · checked Sep 18, 2026
2	Saint-Gobain Performance Plastics	Indirect evidence	Solon, OH, United StatesHQ checked Sep 18, 2026	5,001-10,000	1,658 contacts →
	Indirect evidence “Saint-Gobain is the world’s leading producer of engineered high performance polymer products for virtually every industry around the globe, including automotive, medical…” Source: RevenueBase Database · checked Sep 18, 2026
3	Milacron	Partial evidence	Batavia, OH, United StatesHQ checked Sep 18, 2026	5,001-10,000	1,290 contacts →
	Partial 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 18, 2026
4	Greene Tweed	Indirect evidence	Lansdale, PA, United StatesHQ checked Sep 18, 2026	1,001-5,000	1,129 contacts →
	Indirect evidence “Greene Tweed is a leading global manufacturer of high-performance thermoplastics, composites, seals, and engineered components that outperform and outlast in the world’s harshest…” Source: RevenueBase Database · checked Sep 18, 2026
5	L&l Products	Partial evidence	Romeo, MI, United StatesHQ checked Sep 18, 2026	1,001-5,000	914 contacts →
	Partial evidence “L&L Products is a global applied engineering and materials science company that operates in the B2B market.” Source: RevenueBase Database · checked Sep 18, 2026
6	RTP Company	Indirect evidence	Winona, MN, United StatesHQ checked Sep 18, 2026	1,001-5,000	686 contacts →
	Indirect evidence “RTP Company, headquartered in Winona, Minn, is a global compounder of custom engineered thermoplastics.” Source: RevenueBase Database · checked Sep 18, 2026
7	Ellsworth Adhesives	Partial evidence	Germantown, WI, United StatesHQ checked Sep 18, 2026	1,001-5,000	659 contacts →
	Partial evidence “Ellsworth Adhesives, founded in 1974 in Milwaukee, Wisconsin, is the global distributor of specialty chemicals, adhesives, coatings, and dispensing equipment.” Source: RevenueBase Database · checked Sep 18, 2026
8	Composites ONE	Partial evidence	Schaumburg, IL, United StatesHQ checked Sep 18, 2026	501-1,000	632 contacts →
	Partial evidence “As the premier distributor and leading supplier of composite and high-performance materials, thousands of customers rely on Composites One every day.” Source: RevenueBase Database · checked Sep 18, 2026
9	Inoac Usa, INC	Strong evidence	Troy, MI, United StatesHQ checked Sep 18, 2026	1,001-5,000	602 contacts →
	Strong evidence “INOAC Corporation, founded in 1926 and headquartered in Nagoya, Japan, is a global manufacturer specializing in functional materials such as polyurethane, rubber, plastics, and…” Source: RevenueBase Database · checked Sep 18, 2026
10	Piedmont Plastics	Partial evidence	Charlotte, NC, United StatesHQ checked Sep 18, 2026	501-1,000	547 contacts →
	Partial evidence “Piedmont Plastics is a leading wholesale distributor of plastic sheet, rod, tube, and film, serving a wide range of industries across North America.” Source: RevenueBase Database · checked Sep 18, 2026
11	Polymershapes	Partial evidence	Charlotte, NC, United StatesHQ checked Sep 18, 2026	501-1,000	540 contacts →
	Partial evidence “Polymershapes is an industry-leading distributor of plastic sheet, rod, tube, film, and associated products, with seven decades of industry-leading heritage.” Source: RevenueBase Database · checked Sep 18, 2026
12	Flambeau, INC	Indirect evidence	Baraboo, WI, United StatesHQ checked Sep 18, 2026	1,001-5,000	495 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 18, 2026
13	Royal Technologies Corp	Partial evidence	Hudsonville, MI, United StatesHQ checked Sep 18, 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 18, 2026
14	Nexeo Plastics	Strong evidence	The Woodlands, TX, United StatesHQ checked Sep 18, 2026	501-1,000	468 contacts →
	Strong evidence “Nexeo Plastics is a leading global thermoplastic resins distributor, representing quality products from world-class suppliers, and serving a diverse customer base across North…” Source: RevenueBase Database · checked Sep 18, 2026
15	Daikin America, INC	Indirect evidence	Orangeburg, NY, United StatesHQ checked Sep 18, 2026	201-500	453 contacts →
	Indirect evidence “Daikin has been a world leader in the development, manufacture and sales of fluoropolymers and chemistry since 1924.” Source: RevenueBase Database · checked Sep 18, 2026
16	Laird Plastics	Partial evidence	Irving, TX, United StatesHQ checked Sep 18, 2026	501-1,000	451 contacts →
	Partial evidence “Plastics have changed the world, enabling our society to enjoy the benefits of products that can be safer, lighter, stronger, cheaper and more practical than other materials.” Source: RevenueBase Database · checked Sep 18, 2026
17	Plaskolite	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 18, 2026	1,001-5,000	448 contacts →
	Indirect evidence “PLASKOLITE is the catalyst for thermoplastic innovation that accelerates transformation.” Source: RevenueBase Database · checked Sep 18, 2026
18	Core Molding Technologies	Partial evidence	Columbus, OH, United StatesHQ checked Sep 18, 2026	1,001-5,000	441 contacts →
	Partial 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 18, 2026
19	Zeon Chemicals	Partial evidence	Louisville, KY, United StatesHQ checked Sep 18, 2026	201-500	402 contacts →
	Partial evidence “Zeon Chemicals is a global leader in specialty elastomers, polymers, and advanced chemical solutions.” Source: RevenueBase Database · checked Sep 18, 2026
20	Montaplast Of North America	Indirect evidence	Frankfort, KY, United StatesHQ checked Sep 18, 2026	501-1,000	399 contacts →
	Indirect evidence “Founded in 1958 by Albert Stulz Sr.” Source: RevenueBase Database · checked Sep 18, 2026
21	Geon Performance Solutions	Indirect evidence	Westlake, OH, United StatesHQ checked Sep 18, 2026	1,001-5,000	388 contacts →
	Indirect evidence “Geon® Performance Solutions unlocks the power of polymers for the future.” Source: RevenueBase Database · checked Sep 18, 2026
22	Primex	Partial evidence	Richmond, IN, United StatesHQ checked Sep 18, 2026	1,001-5,000	369 contacts →
	Partial evidence “Primex, founded in 1965, is a global leader in the extruded plastics industry.” Source: RevenueBase Database · checked Sep 18, 2026
23	Spartech LLC	Indirect evidence	St. Louis, MO, United StatesHQ checked Sep 18, 2026	501-1,000	343 contacts →
	Indirect evidence “Spartech has 11 U.S.” Source: RevenueBase Database · checked Sep 18, 2026
24	PEXCO	Partial evidence	Alpharetta, GA, United StatesHQ checked Sep 18, 2026	501-1,000	332 contacts →
	Partial 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 18, 2026
25	Techmer PM	Partial evidence	Clinton, TN, United StatesHQ checked Sep 18, 2026	501-1,000	319 contacts →
	Partial evidence “Techmer PM is a leading materials design company that works in partnership with plastics processors, OEMs, and designers to solve some of their most difficult business…” Source: RevenueBase Database · checked Sep 18, 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: specialty engineering plastics suppliers. 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 specialty engineering plastics suppliers.
Partial evidence: Its own public description names part of specialty engineering plastics suppliers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name specialty engineering plastics suppliers. 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 736 specialty engineering plastics suppliers based in the United States

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Specialty engineering plastics suppliers based in the United States at a glance

As of Sep 18, 2026

39.5%Verified-email coverage

52.2Average contacts per company

11-50Median size (employees)

3.0%Largest-city concentration · Houston

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

195

11-50

250

51-200

161

201-500

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 736 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 specialty engineering plastics suppliers, 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 “specialty engineering plastics suppliers”. 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 specialty engineering plastics suppliers), 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 specialty engineering plastics suppliers, 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, 15,181 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 18, 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 specialty engineering plastics suppliers, 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 specialty engineering plastics suppliers are there based in the United States?

RevenueBase identified 736 specialty engineering plastics suppliers 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?

Avient Corporation, headquartered in Avon Lake, tops this list with the largest team on record.

Which city has the most specialty engineering plastics suppliers?

Houston leads with 22 headquartered companies, followed by Orlando (7) and Atlanta (6).

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 15,181 verified decision-maker contacts tracked across these 736 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 18, 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.