AI Visibility Index: Contract Machining & Machine Shops in California

When a buyer asks an AI assistant for a contract machining & machine shops supplier in California, these are the companies that get named. This is what we found when the cell was last measured.

1,068 companies tracked
Last measured September 30, 2026
Next measurement October 30, 2026

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The headline numbers

Never named by AI

1,033 of 1,068

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.

35 named at least once
1,033 never named

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Cell average: 0.06of 15
Across all 1,068 tracked companies.
Top ten average: 4.5of 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 California

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

Top 10 most AI-visible Contract Machining & Machine Shops companies in California, measured September 30, 2026
Rank	Company	Location	AI visibility
1	Tecma 7 employeesSacramento, California 2 name variants TECMA Companymost common5 TECMA4	Sacramento, California	9 of 15 answers
2	RKL Technologies California 2 name variants RKL Technologiesmost common4 RKL Technologies, Inc.3	California	7 of 15 answers
3	Proaxxis Manufacturing California	California	5 of 15 answers
4	True Precision Machining California 2 name variants True Precision Machiningmost common4 True Precision Machining (TPM)1	California	5 of 15 answers
5	V-Tech Manufacturing Inc. 4 employeesSunnyvale, California 2 name variants V‑Tech Manufacturing, Inc.most common3 VTech Manufacturing, Inc.1	Sunnyvale, California	4 of 15 answers
6	A & R Engineering Co Inc 44 employeesCarson, California	Carson, California	3 of 15 answers
7	Canady Manufacturing Co 13 employeesSan Fernando, California 2 name variants Canady Manufacturing Co.most common2 Canady Manufacturing1	San Fernando, California	3 of 15 answers
8	Mason Machine & Tool 2 employeesFullerton, California	Fullerton, California	3 of 15 answers
9	Price Manufacturing Co. 27 employeesRiverside, California	Riverside, California	3 of 15 answers
10	Ramp Engineering 17 employeesParamount, California	Paramount, California	3 of 15 answers

61 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 California. They belong to that state's ranking, not this one.

Company	State	Mentions
All Materials Manufacturing Company (AMMCO)	Oregon	3 of 15
Kelly Manufacturing	Kansas	3 of 15
MTC Corp	Texas	2 of 15
Optima Precision	Oregon	2 of 15
Campbell Engineering Inc.	New York	1 of 15
Genesis Machining	New York	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 contract machining and machine shop companies in California”
2“Who supplies precision CNC milled and turned components on contract in California”
3“I need a California contract machining partner for a 2,000-unit stainless steel medical device run, who should I talk to”
4“Top contract machining and machine shop suppliers in California for industrial OEM buyers”
5“Which California contract machining and machine shop providers can handle 5-axis CNC work with tight tolerance requirements”
6“List 20 contract machining and machine shop companies in California 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.

peacocktool.com
3 companies
hhmachining.com
2 companies
kellymfginc.com
2 companies
sp-mfg.com
2 companies
top-machining.com
2 companies
adprecision.com
2 companies
ammcomfg.com
2 companies
canadymfg.com
2 companies
crownprecision.com
2 companies
dyecnc.com
2 companies
jahmachine.com
2 companies
mtccorp.com
2 companies

88 sources were cited across this cell's answers from 80 domains. A directory page often stands behind several companies at once; a company's own site usually stands behind one.

California in context

California ranks 35th of 35 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%.

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

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