AI Visibility Index: Plastic Extrusion & Thermoforming in Washington

When a buyer asks an AI assistant for a plastic extrusion & thermoforming supplier in Washington, these are the companies that get named. This is what we found when the cell was last measured.

96 companies tracked
Last measured September 30, 2026
Next measurement October 30, 2026

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The headline numbers

Never named by AI

88 of 96

companies never appeared in a single buying question

They were asked the same 5 buying questions as everyone else in this cell and were not named once.

8 named at least once
88 never named

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Cell average: 0.17of 15
Across all 96 tracked companies.
Top ten average: 3.5of 15
The ten most visible companies in the cell.

A company's score is how many of the 15 measured answers named it.

The top ten in Washington

These are the companies AI assistants named most often when Washington buyers went looking for a supplier in this category.

Top 10 most AI-visible Plastic Extrusion & Thermoforming companies in Washington, measured September 30, 2026
Rank	Company	Location	AI visibility
1	Tamarack Industries Washington	Washington	12 of 15 answers
2	General Plastics Manufacturing Co. Washington 2 name variants General Plastics Manufacturing Co.most common4 General Plastics Manufacturing Company2	Washington	6 of 15 answers
3	Pexco Aerospace, Inc 249 employeesUnion Gap, Washington	Union Gap, Washington	3 of 15 answers
4	Proto Technologies, Inc. 22 employeesLiberty Lake, Washington 2 name variants Proto Technologiesmost common2 Proto Technologies Inc.1	Liberty Lake, Washington	3 of 15 answers
5	Achilles USA 171 employeesEverett, Washington 2 name variants Achilles USA, Inc.most common1 Achilles USA1	Everett, Washington	2 of 15 answers
6	Lemac Manufacturing Co Inc 5 employeesBellingham, Washington	Bellingham, Washington	2 of 15 answers
7	NorPlex Inc. 42 employeesAuburn, Washington	Auburn, Washington	2 of 15 answers
8	Pexco 153 employeesTacoma, Washington 2 name variants Pexco LLCmost common1 Pexco1	Tacoma, Washington	2 of 15 answers
9	Multifab Manufacturing Washington	Washington	2 of 15 answers
10	Redwood Plastics and Rubber Woodland, Washington	Woodland, Washington	1 of 15 answers

7 more companies were named at least once. Companies outside the top ten are counted in the averages but not named here.

Also named, based in another state

AI assistants named these companies too, but MacRAE'S lists them in a different state, not Washington. They belong to that state's ranking, not this one.

Company	State	Mentions
American Packaging, Inc.	Wisconsin	15 of 15
Hill Plastics	Texas	9 of 15
Aero-Plastics Inc.	Ontario	8 of 15
West Coast Plastics, Inc.	California	8 of 15
Willamette Plastics	Oregon	8 of 15
Plastics Design & Manufacturing	Georgia	6 of 15

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The five questions we asked

Every company in this cell is measured on the same questions, written the way a buyer would type them. That is what makes the ranking a comparison rather than a collection of anecdotes.

1“Best plastic extrusion and thermoforming companies in Washington”
2“Who supplies custom extruded and thermoformed plastic profiles in Washington”
3“I need a Washington plastic extrusion and thermoforming partner for a new consumer product housing program, who should I talk to”
4“Top plastic extrusion and thermoforming suppliers in Washington for OEM product development buyers”
5“Which Washington plastic extrusion and thermoforming companies can handle tight-tolerance co-extruded sheet and deep-draw forming”
6“List 20 plastic extrusion and thermoforming companies in Washington with their specialties.”the roster question

Each question is asked more than once, which is why a company's score is out of 15 answers rather than out of the number of questions.

Where AI drew its answers from

These are the sources the answers in this cell leaned on most, ranked by how many of the named companies each one stands behind.

thomasnet.comDirectory
11 companies
generalplastics.com
2 companies
achillesusa.com
2 companies
prototech.com
2 companies
polymershapes.com
1 company
tamarackindustries.com
1 company
advancedplastic.com
1 company
aero-plastics.com
1 company
amerpf.com
1 company
curbellplastics.com
1 company
emps-llc.com
1 company
feeds.hillplastics.com
1 company

32 sources were cited across this cell's answers from 27 domains. A directory page often stands behind several companies at once; a company's own site usually stands behind one.

Washington in context

Washington ranks 14th of 26 measured states in this category. Each bar is the share of that state's tracked companies that AI assistants named at least once; across every measured state in this category the share is 7%.

Washington (this report)Other measured statesCategory average (7%)

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