AI Visibility Index: Injection Molded Plastics in Missouri

When a buyer asks an AI assistant for a injection molded plastics supplier in Missouri, these are the companies that get named. This is what we found when the cell was last measured.

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

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The headline numbers

Never named by AI

153 of 167

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.

14 named at least once
153 never named

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Cell average: 0.49of 15
Across all 167 tracked companies.
Top ten average: 7.9of 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 Missouri

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

Top 10 most AI-visible Injection Molded Plastics companies in Missouri, measured September 30, 2026
Rank	Company	Location	AI visibility
1	Four Process, LTD 15 employeesValley Park, Missouri	Valley Park, Missouri	12 of 15 answers
2	Permian Plastic 35 employeesO'Fallon, Missouri 2 name variants Permian Plasticsmost common9 Permian Plastics, LLC3	O'Fallon, Missouri	12 of 15 answers
3	LeVic Plastics 25 employeesGrandview, Missouri	Grandview, Missouri	10 of 15 answers
4	C-K Plastics, Inc. 35 employeesSt. Louis, Missouri 2 name variants C‑K Plasticsmost common7 C‑K Plastics, LLC2	St. Louis, Missouri	9 of 15 answers
5	Mission Plastics 150 employeesGrandview, Missouri 3 name variants Mission Plastics, Inc.most common4 Mission Plastics North3 Mission Plastics2	Grandview, Missouri	9 of 15 answers
6	Tabor Plastics Company 21 employeesSt. Louis, Missouri	St. Louis, Missouri	6 of 15 answers
7	The Toolroom 60 employeesOwensville, Missouri 2 name variants The Toolroom, Inc.most common5 The Toolroom1	Owensville, Missouri	6 of 15 answers
8	Lmc Industries Inc 350 employeesArnold, Missouri	Arnold, Missouri	5 of 15 answers
9	Seiler Plastics Corporation 30 employeesSt. Louis, Missouri 2 name variants Seiler Plasticsmost common4 Seiler Plastics Corporation1	St. Louis, Missouri	5 of 15 answers
10	UC Plastics Missouri	Missouri	5 of 15 answers

13 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 Missouri. They belong to that state's ranking, not this one.

Company	State	Mentions
Moore Industries	Ohio	2 of 15
CIC	New York	1 of 15
Engineered Plastic Components, Inc. (EPC)	Iowa	1 of 15
Ronningen Research & Development	Michigan	1 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 suppliers of injection molded plastics in Missouri”
2“Who supplies custom injection molded ABS housings in Missouri”
3“I need a Missouri injection molded plastics partner for a 100,000 unit consumer electronics enclosure run, who should I talk to”
4“Top injection molded plastics suppliers in Missouri for consumer product OEM buyers”
5“Which Missouri injection molders can handle overmolding on metal inserts for structural components”
6“List 20 injection molded plastics companies in Missouri 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.

missionplasticsnorth.com
3 companies
ckplastics.com
2 companies
mmtpsolutions.com
2 companies
seilerpc.com
2 companies
kmmachineco.com
2 companies
moore-industries.com
2 companies
permianplastics.com
2 companies
thetoolroom.com
2 companies
taborplastics.com
1 company
levic.com
1 company
lmcindustries.com
1 company
buckertmold.com
1 company

39 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.

Missouri in context

Missouri ranks 14th of 33 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 6%.

Missouri (this report)Other measured statesCategory average (6%)

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