Sample sourcing studyOctober 21, 2026

Box build and system integration suppliers, US

Make PEKO lead, Foxtronics second source, Astro and Sierra fallbacks.

375,000 sq ft 9

Rochester, NY

PEKO: Campus spans about 375,000 sq ft across 9 facilities^1–2

80 x 52 x

Eastlake, OH

Astro: Largest milling part dimensions: 80 x 52 x 54 inches⁹

20,000 sq ft complex

Chino, CA

Sierra: Runs two fully automated SMT assembly lines^10–11

Sites in the US

Headquarters

Also:Foxtronics

Headquarters
Also:Foxtronics
375,000 sq ft 9Rochester, NY PEKO: Campus spans about 375,000 sq ft across 9 facilities^1–2
80 x 52 xEastlake, OH Astro: Largest milling part dimensions: 80 x 52 x 54 inches⁹
20,000 sq ft complexChino, CA Sierra: Runs two fully automated SMT assembly lines^10–11

the five ranked suppliers

1Lead

PEKO

2Second source

Foxtronics

3Fallback

Astro

4Fallback

Sierra

5Watch

LeeMAH

The answer

Send the RFQ to all four, starting with PEKO.

Second-source Foxtronics EMS: ISO 9001:2015 confirmed, box build in Jacksonville. Neither PEKO nor Foxtronics shows IPC/WHMA-A-620 on the pages read. LeeMAH is closing its Brisbane headquarters and laying off 212.^1–6

Who gets the RFQ

Four suppliers, led by PEKO.

Lead
PEKO
Large Rochester campus that builds cabinets and systems for defense, medical and semiconductor OEMs.^{1–3, 14–15}
24 of 24
Second source
Foxtronics
Multi-plant US electronics platform with box build, as a second source.^{4–5, 16}
22 of 24
Fallback
Astro
Systems and machines integrator with in-house NADCAP painting.^{7, 17–18}
22 of 24
Fallback
Sierra
Small Chino shop that does box build as system integration, suited to low volume.^{10–11, 19–21}
20 of 24

Watch

PEKO’s lead rests on 16 points that come from one website each; without them it scores 8, below Foxtronics.^{3, 22}

Next steps

Five steps, starting with the RFQ to PEKO, Foxtronics, Astro and Sierra.

1
Send an RFQ to PEKO Precision Products asking for its ISO certificate and IPC/WHMA-A-620 status.
2
Send the same RFQ to Foxtronics EMS and ask whether CCK Jacksonville or Accutron Windsor builds it.
3
Quote Sierra Assembly Technology and 603 Manufacturing as low-volume backups.
4
Leave LeeMAH Electronics out until the outcome of the Brisbane closure is known.
5
Attach the 8 open questions (p. 6) to the RFQ.

Scorecard

PEKO scores 24 of 24; Foxtronics 22.

HQWeighted totalof 24; by criterion

1Lead

PEKO

Rochester, NY

8+8+8

2Second source

Foxtronics

United States

8+6+8

3Fallback

Astro

Eastlake, OH

6+8+8

4Fallback

Sierra

Chino, CA

8+6+6

5Watch

LeeMAH

Brisbane, CA

6+6+2

Box build

PEKO and Astro each name four customers, the most.

Processes

13processes^{3, 22–23}

medical device assembly…

14processes^{4, 6}

SMT assembly, through-hole…

19processes^{9, 17}

electromechanical contract…

16processes^{21, 24}

box build assembly, PCB assembly

10processes^25–27

electromechanical box build, PCB…

CNC machines

100³

Turnkey box build, harnessing^{4, 6}Q3

24 machining centers⁹

another basisQ3

Enclosure, wiring, software, test²¹Q3

PDUs, racks, power supplies¹³Q3

System integration

Certificates

your must-haves first

ISO 9001:2015^{3, 23}

+5 more

ISO 9001:2015^4–5

+8 more

ISO 9001:2015 Quality Management System^17–18

+4 more

ISO 9001:2015^{20–21, 24}

+5 more

ISO 9001:2015 (per brief…)^{13, 28–29}

+10 more

US plants

48 pts

36 pts

12 pts

PEKO leads on plant area at 375,000 sq ft; next Astro at 142,000 sq ft.

Plant area

375,000sq ft^1–2

17,000sq ft⁶

142,000sq ft^7–8

20,000sq ft¹⁰

137,000sq ft¹²

Sites in the US

one per city

1site³

HQ Rochester

Sites in Connecticut, Illinois^{6, 30}Q5

1site¹⁷

HQ Eastlake

1site¹⁰

HQ Chino

1site^31–32

HQ Brisbane

Each supplier scored 0–4 per criterion against a published rule; the three asks in your brief count double. The rules, the facts behind every score and the numbered sources are in the online appendix.

Grey: a figure for something else (a group’s, an estimate) or part of an answer

Q3: an open question for the RFQ

Supplier profiles

PEKO

PEKO Precision Products · pekoprecision.com

Lead

Supplier profile · 1 of 3

Large Rochester campus that builds cabinets and systems for defense, medical and semiconductor OEMs.^{1–3, 14–15}

375,000 sq ft across 9 facilities.^{1–3, 14–15}

NIST 800-171 named on its site.^{1–3, 14–15}

400³³

People

375,000sq ft^1–2

Plant area

100³

Production lines

4^{3, 15, 22}

Named customers

Major defense prime contractors, $1B+ companies, mid-markets…

Processes: Medical device assembly, electromechanical assembly · +4 more^{3, 22–23}
Machining and finishing: CNC machining, laser cutting, turret punching, press brake forming, powder coating · +1 more¹

Head office in Rochester, NY.³

References

Major defense prime contractors

PEKO says many major defense prime contractors work with it¹⁵

$1B+ companies, mid-markets, scale-ups, startups

PEKO’s customer base includes $1B+ companies, mid-markets, scale-ups and startups³

QED

PEKO’s case studies name QED as a customer for a next-generation optical manufacturing machine²²

Strengths

Box build: case studies, dispensing cabinet, ASRS and an 8x8 ft defense radar platform²²
System integration: site lists systems integration and hardware testing; built a wired, plumbed optics sub-assembly^{3, 22}

Company channels

Website: pekoprecision.com
RFQ page: pekoprecision.com/contact
Email: sales@pekoprecision.com
Phone: (585) 537-6060

Every score for PEKO, and the facts behind it, is in the online appendix.

Supplier profiles

Foxtronics and Astro

Foxtronics

Foxtronics EMS · foxtronicsems.com

Second source

Supplier profile · 2 of 3

Multi-plant US electronics platform with box build, as a second source.^{4–5, 16}

ISO 9001:2015 named and confirmed.^{4–5, 16}

Founded in 1989.¹⁶

$20m³⁵

Revenue

300³⁶

People

17,000sq ft⁶

Plant area

ISO 9001:2015^4–5

Certificates

+8 more

Foxhole Group³⁷

Owner

Processes: SMT assembly, through-hole assembly, PCB assembly, system-level integration · +2 more^{4, 6}

Strengths

Box build: turnkey box build with wiring and harnessing; CCK Jacksonville site runs box build^{4, 6}

Company channels

Website: foxtronicsems.com

Every score for Foxtronics, and the facts behind it, is in the online appendix.

Astro

Astro Manufacturing (Astro Engineering) · astromfg.com

Fallback

Supplier profile · 3 of 3

Systems and machines integrator with in-house NADCAP painting.^{7, 17–18}

300³⁹

People

142,000sq ft^7–8

Plant area

24machining centers⁹

Production lines

another basisQ3

4⁴⁰

Named customers

Lifeclinic, Lockheed Martin

1977⁷

Founded

Processes: Electromechanical contract manufacturing, electrical and mechanical design · +4 more^{9, 17}

Head office in Eastlake, OH.¹⁷

References

Lifeclinic

Astro developed a health kiosk system for Lifeclinic, a national company⁴⁰

Strengths

Box build: secondary operations include total product and system assembly⁷

Company channels

Website: astromfg.com
RFQ page: astromfg.com/request-a-quote
Phone: 1.888.215.1746

Every score for Astro, and the facts behind it, is in the online appendix.

Risks

LeeMAH carries three of the five risks to manage.

Exhibit 1

Five risks to manage before award.

Each risk and the suppliers it affects

	Risk	Affects
1	LeeMAH is closing its Brisbane headquarters by year end and laying off 212 employees.^42–43	LeeMAH
2	Foxtronics lists no IPC/WHMA-A-620 cable standard; its workmanship claims cite IPC-A-610 and J-STD-001.⁴	Foxtronics
3	Chief Enterprises’ posted ISO 9001:2015 certificate copy expired on 2025-07-15.⁴⁴	Every bidder
4	Bankruptcy or going-concern warning: site closures.^45–47	LeeMAH
5	LeeMAH: the closure also signals a pullback that appears to extend to the Bay Area base.⁴³	LeeMAH

Source: foxtronicsems.com [4]; dealroom.co [42]; hoodline.com [43]; netsuite.com [44]; yahoo.com [45]; kron4.com [46]; jsilvermanlaw.com [47]

Open questions for the RFQ

Eight questions for the RFQ, by supplier.

For every bidder3 questions

1
Confirm in writing: ISO 9001.
Why: Your brief requires it.
2
Confirm in writing: IPC/WHMA-A-620.
Why: Your brief requires it.
3
Ask every bidder how many production lines it would run for the order.
Why: Decides box build, one of the criteria that count double.

PEKO

1 question

4
Ask for current ISO 9001:2015 certificate from ABS Quality Evaluations and IPC/WHMA-A-620 status.
Why: Needed before award.

Foxtronics

2 questions

5
Confirm its sites in the US, by city.
Why: Decides US plants, one of the criteria that count double.
6
Ask which plant builds box builds and whether any site works to IPC/WHMA-A-620.
Why: Decides box build, one of the criteria that count double.

Astro

1 question

7
Ask for the ISO 9001:2015 certificate copy and any electrical box build references.
Why: Decides box build, one of the criteria that count double.

Sierra

1 question

8
Confirm IPC/WHMA-A-620 certification, headcount and founding year.
Why: Needed before award.

Online appendix: the open questions, scoring rules, evidence and sources. On screen only; the PDF has the pages above.

Appendix A · Scoring rules

How the scorecard was scored

Each supplier scores 0–4 per criterion against these rules; p. 7 shows the evidence.

Criterion	Looked at
Box build Counts double.	Processes, CNC machines
System integration Counts double.	Certificates
US plants Counts double.	Plant area, Sites in the US

Each supplier scores 0–4 per criterion, 4 the best. On a cost or risk criterion, 4 means the least cost or risk.

Weighted total: the three asks in your brief count double; the most a supplier can score is 24.

A cell nothing backs is left unscored, never counted as zero.

Appendix A · Evidence

What is behind each score

Score, the facts behind it and their numbered sources (Appendix B, p. 11).

	1Lead PEKO	2Second source Foxtronics	3Fallback Astro	4Fallback Sierra	5Watch LeeMAH
Box build Counts double.	48 pts Case studies: dispensing cabinet, ASRS and an 8x8 ft defense radar platform.²²	48 ptsQ3 Q6 Turnkey box build with wiring and harnessing; CCK Jacksonville site runs box build.^{4, 6}	36 ptsQ3 Q7 Secondary operations include total product and system assembly.⁷	48 ptsQ3 Box build covers enclosure assembly, wiring, software loading, labeling and testing.²¹	36 ptsQ3 Box build list: PDUs, fan assemblies, racks, cabinets; hi-pot and burn-in testing.¹³
System integration Counts double.	48 pts Site lists systems integration and hardware testing; built a wired, plumbed optics sub-assembly.^{3, 22}	36 pts System integration stated for aerospace and defense, in AS9100D, ITAR facilities.⁴	48 pts Turnkey contract manufacturing of systems, machines, equipment and sub-assemblies.¹⁷	36 pts Calls box build system integration; supports prototypes, pilot runs, low-volume builds.²¹	36 pts Older trade item cites system assemblies: telecom racks, card cages, control systems.²⁶
US plants Counts double.	48 pts Rochester, NY campus across 9 facilities; over 100 CNC machines.^1–3	48 ptsQ5 Windsor CT 55,000 sq ft; Jacksonville IL 100,000; Milford CT 17,000.^{6, 30}	48 pts Plus a 55,000 sq ft fabricating plant in Willoughby, Ohio.^7–8	36 pts One Chino, California site running two automated SMT lines.^10–11	12 pts Brisbane headquarters closing by year end; reports describe a wider pullback.^42–43
Weighted total	248+8+8	228+6+8	226+8+8	208+6+6	146+6+2

Appendix A · Method and long list

How the study was run

On October 21, 2026, the study read 175 web pages in 31 min and checked 30 findings on a second website.

Exhibit 2

50 found, 5 ranked.

Companies at each stage

50Found

47Fit the brief

20Researched in depth

5Ranked

Company	Type	Home	Reason
Ranked (5)
PEKO Precision Products⁴⁸	Contract…	Rochester, US	Lead.
Foxtronics EMS⁴		US	Second source: its site offers turnkey box build and system integration with wiring and mechanical assembly. It claims…
Astro Manufacturing (Astro Engineering)⁴⁹	Electromechanical…	Eastlake, US	Fallback: homepage shows turnkey assembly of systems and machines in Eastlake, Ohio, with system integration…
Sierra Assembly Technology²¹	Turnkey box build…	Chino, US	Fallback: homepage box build page offers turnkey box build and system integration in Chino, California. Claims ISO…
LeeMAH Electronics¹³	Electro-mechanical…	Brisbane, US	Watch: no homepage was given, so we could not read its own site. Brief says it builds electro-mechanical boxes and…
Researched in depth, not ranked (15)
603 Manufacturing⁵⁰		US	Its site lists electro-mechanical box builds and full system integration, turnkey. It claims ISO 9001 and IPC-A-620…
Alternative Manufacturing Inc (AMI)⁵¹	Electronic contract…	Winthrop, US	Box builds and system integration in Maine, but no ISO 9001 certificate found.
Arimon Technologies⁵²	Box build…	Montello, US	Its box build page offers full electrical and mechanical box build. It says its quality system is certified to ISO…
Benchmark Electronics (Minnesota operations)⁵³	Minnesota…	Rochester, US	Rochester, MN plant does system integration with ISO 9001, but box build is not confirmed.
CCK Automations⁵⁴	IPC-A-610…	Jacksonville	Box build site within Foxtronics, so it is covered through that pick.
Chief Enterprises LLC⁵⁵	Box build, PCB…	US	Mainly a components distributor, and its posted ISO certificate copy has expired.

Appendix A · Method and long list · continued

How the study was run

Company	Type	Home	Reason
Researched in depth, not ranked (15), continued
Circuit Assembly⁵⁶		US	Does box build, rack and system integration in Irvine and has a current certificate, but part of its production runs in…
Electro-Prep, Inc.⁵⁷	Contract…	East Falmouth	US maker (Wareham, MA) of box-builds and electromechanical assemblies. Site states ISO 9001:2015…
Inside Track Cabling, Inc.⁵⁸	New England…	Hudson, US
Key Tronic Corporation⁵⁹	EMS provider…	US	Large EMS firm that does integrated systems, but its certificates are unverified.
MPI - Manufacturing Partners, Inc.⁶⁰	Domestic contract…	US	Box build with IPC/WHMA-A-620A, but ISO 9001:2008 is outdated and its own site was not read.
Qesidyne Inc⁶¹		US	Turnkey electro-mechanical builds to WHMA-A-620 in NH, but ISO 9001 could not be checked.
South Bay Circuits (SBC)⁶²	Electronic box…	Chandler, US	Does turnkey box builds in Chandler, but sources disagree on its registrar’s name.
Square 1 Industries, Inc.⁶³	Turnkey EMS, box…	US	A listing claims box build and ISO 9001 in NC, but its own site was not checked.
UNICOM Engineering⁶⁴		US	Rack-level integration with ISO 9001:2015, but it focuses on servers and no US plant city is given.
Fit the brief, not researched (27)
ABX Engineering, Inc.⁶⁵	Contract…	US	No homepage was given, so we could not read its own site. Brief says it does box build and turnkey work, and a…
Accu-Fab, Inc.⁶³	Manufacturing…	US
Agility Mfg., Inc.⁶⁶	Since 1987 has…	Dover, US	No homepage was given. Lead’s notes say Dover, NH; PCB assembly and electro-mechanical assemblies since 1987…
American Circuits⁶³	EMS, PCB…	US	EMS and PCB maker for aerospace, military, healthcare and energy. Listing is a weak fit for box build. No own website…
American Computer Development, Inc. (ACDi)⁶³	Electronic contract…	US	Electronic contract manufacturer with process engineering, configuration management, serialization and fast…
Atlas Manufacturing⁶⁷		US
Circuit Pak⁵³	Privately owned…	Dayton, US	No homepage was given, so we could not read its own site. Lead’s notes say Dayton, OH electronic contract…
CNC-KE, Inc.⁶⁸	Electronic…	US	No homepage given in the brief; could not read its own site. Lead-supplied note says box build and electronic…
Creation Technologies⁵³	Oak Creek facility…	Oak Creek, US	No homepage was given, so we could not read its own site. Lead’s notes say Oak Creek, WI with ISO 9001 and ISO…
Deva Inc.⁶⁹	Box build…	US	No homepage given in the brief; could not read its own site. Lead-supplied note says box build, control panels and…
Dutek, Inc.⁶⁹	Box build…	US	No homepage given in the brief; could not read its own site. Lead-supplied note says box build and electromechanical…
EC Electronics⁷⁰	Box build…	San Jose, US	No homepage was given, so we could not read its own site. Brief says it does box build and cable-based assemblies in…
EE Technologies⁷¹	Multinational EMS…	Reno, US	Multinational EMS provider in Reno, per the brief. No homepage was given, so we could not check box-build…

Appendix A · Method and long list · continued

How the study was run

Company	Type	Home	Reason
Fit the brief, not researched (27), continued
EMS Solutions⁷²	Runs four SMT lines	York, US	EMS firm in York with four SMT lines, per the brief. No homepage was given, so box-build and certificates were…
Jabil⁷⁰	Global electronics…	Austin, US	No homepage was given, so we could not read its own site. Jabil is a large EMS provider with an Austin, Texas base…
Key Electronics⁵³	Serves aerospace…	Jeffersonville	No homepage was given, so we could not read its own site. Lead’s notes say low-to-medium volume custom builds in…
Lou-Rich, Inc.⁶⁷		US
Mathis Electronics⁶³	Electronic…	US	No website to open. Only a listing says EMS and machining, 10-49 staff. Box build and ISO 9001 are not confirmed.
Nortech Systems⁵⁹	Full-service…	Maple Grove	No homepage given in the brief; could not read its own site. Lead-supplied note says full-service provider for…
Plexus Corp.⁷²	Full-lifecycle EMS…	Neenah, US	No homepage given in the brief; could not read its own site. Lead-supplied note says full-lifecycle EMS for PCB…
Pro-Active Engineering⁷³		US	No website to open. Listing says AS9100 certified, ITAR, and engineering-to-system manufacturing. Box build, ISO…
Rely Contract Manufacturing⁶⁰	Custom…	US	No homepage is listed, so we could not read its own site. Listing says it makes box build and cable assemblies, but…
Rocket EMS⁷⁴	Contract…	Santa Clara	Contract manufacturer with sites in Santa Clara and Carson City, CA, focused on new product introduction. Listing says…
Sanmina (Kenosha facility)⁵³	Kenosha facility…	Kenosha, US	No homepage was given. Lead’s notes say Kenosha, WI facility makes circuit boards and radar systems. Box build…
Source International Global LLC⁶⁸	Contract…	US	No homepage is listed, so we could not read its own site. Listing says contract manufacturing for OEMs, but box…
Spinnaker Contract Manufacturing, Inc.⁶⁶	New…	Tilton, US	New England contract manufacturer in Tilton, NH, per the brief. No homepage was given, so we did not check its…
TSI Group, Inc.⁶⁶	Supplies custom…	US	Turn-key electronic and thermal assemblies in North Hampton, NH, per the brief. No homepage was given, so its…
Did not fit the brief (3)
Applied Manufacturing Technologies (AMT)⁷⁵	Robotics…	Orion, US	Robotics and automation integrator, not a box-build contract manufacturer. No website was given, so nothing on its own…
Precision Advanced Manufacturing⁷⁶		US	Listing describes fabrication, not box build or system integration. No website to check further.
Shamrock Precision⁷⁷	AS9100 certified…	Dallas, US	Its site describes precision CNC and Swiss machining. It does not offer box build or system integration.

Appendix B · Sources

Numbered sources

Superscript numbers in the text and bracketed numbers in source lines point here.

1
pekoprecision.com
pekoprecision.com/facilities
We offer a complete sheet metal fabrication shop with automated powder coat line.
2
insidejobsales.com
insidejobsales.com/manufacturer/peko-precision-products
Committed to quality and compliance, PEKO is registered under AS9100, ISO 13485, and ISO 9001 standards and is NIST 800-171 compliant.
3
pekoprecision.com
pekoprecision.com
Our customer base features a myriad of high-profile $1B+ companies, mid-markets, scale-ups, and startups.
4
Foxtronics EMS Aerospace & Defense page — foxtronicsems.com, 2026-10-21
foxtronicsems.com/industries/aerospace-defense
IPC-A-610 & J-STD-001 Trained Technicians
5
d2pbuyersguide.com
d2pbuyersguide.com/manufacturer/foxtronics-ems-25383
Certification(s): AS9100D, ISO 13485:2016, ISO 9001:2015, ITAR, RoHS
6
Foxtronics EMS Facilities — foxtronicsems.com, 2025-11-15
foxtronicsems.com/facilities
Certifications: ISO 9001, AS9100 D (Aerospace), ISO 13485 (Medical), CSA and UL Registered (Customer Specified)
7
Astro Manufacturing & Design - About Us — astromfg.com, 2026-10-21
astromfg.com/about-us
Astro offers large and regular capacity CNC milling and turning, complete sheet metal fabrication, welding, NADCAP mil-spec painting, engineering, and total product assembly services.
8
thomasnet.com
thomasnet.com/company/00046649/profile
Our 142,000-square-foot corporate headquarters, located in Eastlake, Ohio, is the workplace of some of Northeast Ohio's most talented manufacturing personnel.
9
astromfg.com
astromfg.com/machining-services/cnc-milling-services-large-capacity
parts with dimensions as large as 80” (x-axis) by 52” (y-axis) by 54” (z-axis) on pallets as large as 40” x 40”.
10
Sierra Assembly About Us page — sierraassembly.com, 2026-10-21
sierraassembly.com/about-us
now running two fully automated SMT assembly lines in the 20,000 square-foot complex we call home

11
environmental-expert.com
environmental-expert.com/companies/sierra-assembly-technology-llc-111685
now running two fully automated SMT assembly lines in the 20,000 square-foot complex we call home.
12
About LeeMAH Electronics (leemah.com) — leemah.com, 2026-10-21
leemah.com/about
We offer customer-focused strategies with our California and Texas locations which total over 137,000 square feet.
13
Electromechanical Box Build Manufacturing (leemah.com) — leemah.com, 2026-10-21
leemah.com/capabilities/electromechanical-box-build-manufacturing
For more information about our electro-mechanical box manufacturing capabilities, please see the following table or contact us directly.
14
cbinsights.com
cbinsights.com/company/peko-precision-products
PEKO serves sectors such as renewable energy, industrial manufacturing, medical and healthcare, defense and aerospace, semiconductor, and communications.
15
pekoprecision.com
pekoprecision.com/industries
Many of the major prime contractors work with PEKO because we are able to handle the large and complex mechanical equipment they need to produce.
16
rf-partners.com
rf-partners.com/portfolios/foxtronics
Founded in 1989, Foxtronics is a full-service electronic manufacturing services (‘EMS”) platform
17
Astro Manufacturing & Design company homepage — astromfg.com, 2026-10-21
astromfg.com
Astro Manufacturing offers turnkey contract manufacturing of systems, machines, equipment and sub-assemblies.
18
astromfg.com
astromfg.com/certifications
ISO 9001:2015 Quality Management System
19
Sierra Assembly Technology LLC LinkedIn profile — linkedin.com, 2026-10-21
linkedin.com/company/sierra-assembly-technology-llc
Type · Self-Owned

Appendix B · Sources · continued

Numbered sources

20
navy.mil
navair.navy.mil/osbp/node/6566
is a versatile ISO 13485:2003 certified organization
21
Sierra Assembly Technology box build services page — sierraassembly.com, 2026-10-21
sierraassembly.com/pcb-assembly/box-build-assembly-services
enclosure assembly, wiring installation, software loading, labeling, testing, and final product configuration under one roof
22
pekoprecision.com
pekoprecision.com/resources/casestudies
An industry leading optics manufacturer had already chosen PEKO for Contract Manufacturing
23
pekoprecision.com
pekoprecision.com/company/quality-management-systems
certified through ABS Quality Evaluations to: AS9100D – ISO 9001:2015 – ISO 13485:2016
24
sierraassembly.com
sierraassembly.com/capabilities/assembly-capabilities
Wave Soldering | Yes
25
Web search: LeeMAH Electronics bankruptcy, lawsuit, judgment, lien — leemah.com, 2026-10-21
leemah.com
We offer cable and printed circuit board assembly services.
26
leemah.com
leemah.com/author/leemah
It is the leading subcontractor for critical electronic components used by Agilent, Lucent, Texas Instruments, Alcatel USA
27
mapquest.com
mapquest.com/us/california/leemah-electronics-274447152
LeeMAH s services include printed circuit board assembly, system assembly and cable assembly.
28
LeeMAH Quality page — leemah.com, 2026-10-21
leemah.com/certifications
IPC/WHMA-A-620 CIT
29
ThomasNet LeeMAH profile — thomasnet.com, 2026-10-21
thomasnet.com/company/leemah-electronics-inc-10022797/profile
to the aerospace, defense, industrial, medical device and audio/visual companies.
30
inven.ai
inven.ai/company-lists/top-19-contract-manufacturing-companies-in-connecticut
The company operates from a 55,000 square foot facility and employs approximately 98 skilled technicians.
31
leemah.com
leemah.com/capabilities/electronic-manufacturing-services-ems
We serve customers in industries spanning from communications, industrial, instrumentation, and medical devices to military, aerospace, transportation, and professional audio.

32
LeeMAH Electronics, Inc. | LinkedIn — linkedin.com, 2026-10-21
linkedin.com/company/leemah-electronics
Company size · 501-1,000 employees
33
pekoprecision.com
pekoprecision.com/careers
Join our growing team of over 400 employees!
34
themanufacturingoutlook.com
themanufacturingoutlook.com/peko-precision-products
PEKO Precision Products has been recognized as Top Electromechanical Machinery Contract Manufacturer 2025 by Manufacturing Outlook Magazine.
35
seamless.ai
seamless.ai/b/foxtronics-ems-13760160
The annual revenue of Foxtronics EMS is $20M - $50M.
36
Foxtronics EMS news: Acquires Accutron — foxtronicsems.com, 2026-10-21
foxtronicsems.com/news-and-updates/foxtronics-ems-acquires-accutron
The company employs 300+ staff that serve 150 customers
37
pitchbook.com
pitchbook.com/profiles/company/641878-75
38
Foxtronics EMS blog (article dated October 7, 2026) — foxtronicsems.com, 2026-10-07
foxtronicsems.com/design-engineering/design-transfer-in-electronics-manufacturing-guide
39
mfg.com
mfg.com/manufacturer/astro-manufacturing-design-corp-eastlake-ohio-337867
We have over 300 employees dedicated to serving our customers
40
Astro Manufacturing & Design - Case Studies — astromfg.com, 2021-08-17
astromfg.com/case-studies
Astro was approached by Lifeclinic, a national company, interested in the design & development
41
manufacturing-today.com
manufacturing-today.com/news/astro-manufacturing
Astro has over 40 years of getting it right
42
dealroom.co
app.dealroom.co/news/feed/55-year-old-bay-area-electronics-company-leemah-to-close-plant-lay-off-212
LeeMah Electronics is closing its Brisbane, California headquarters by the end of the year, laying off 212 employees.
43
Hoodline: Brisbane Fixture LeeMAH Shutters Plant, 212 Workers Get Pink Slips — hoodline.com
hoodline.com/2026/07/brisbane-fixture-leemah-shutters-plant-212-workers-get-pink-slips
That move trimmed the company's U.S. manufacturing footprint and signaled a pullback that now appears to extend to its Bay Area base.

Appendix B · Sources · continued

Numbered sources

44
netsuite.com
1146044.app.netsuite.com/core/media/media.nl?id=3723861&c=1146044&h=817358fd7d1134947574&_xt=.pdf
Original Registration Date: 2001-05-11 · Effective Date: 2022-07-16
45
Yahoo Finance: Bay Area electronics company to close plant, lay off 212 employees — yahoo.com
finance.yahoo.com/technology/articles/bay-area-electronics-company-close-200337332.html
46
KRON4: Half-century-old electronics company on Peninsula to lay off hundreds — kron4.com
kron4.com/news/technology-ai/half-century-old-electronics-company-on-peninsula-to-lay-off-hundreds
47
Law Offices of Justin Silverman, EDD WARN data page — jsilvermanlaw.com, 2026-09-18
jsilvermanlaw.com/layoffs/leemah-electronics
48
pekoprecision.com
pekoprecision.com/industries/medical-contract-manufacturing
49
astromfg.com
astromfg.com/automation-engineering-services/electromechanical-contract-manufacturing-design-services
50
603manufacturing.com
603manufacturing.com
sales@603mfg.com
51
amiems.com
amiems.com/box-build
52
arimon.com
arimon.com/solutions-applications/box-build-assembly
Dedicated work cells to respond promptly to schedule changes and seasonal or sales demand fluctuations
53
ventureoutsource.com
ventureoutsource.com/contract-manufacturing/top-10-ems-providers-in-usa-midwest-2016
54
cckautomations.com
cckautomations.com/ems-solutions.php
CCK Automations is a leading provider of high-quality, IPC-A-610 certified printed circuit board assemblies (PCBA's).
55
thomasnet.com
thomasnet.com/suppliers/north-carolina/all-cities/box-build-assembly-contract-manufacturing-96139704
56
circuitassembly.com
circuitassembly.com/?PartId=5221&PartId=5221
the production power of our wholly-owned Shenzhen facility
57
electroprep.com
electroprep.com
Box-Builds / Electro Mechanical Assemblies

58
insidetrackcabling.com
insidetrackcabling.com/box-build-assemblies
59
venture-mfg.com
venture-mfg.com/ems-companies-in-the-usa
60
thomasnet.com
thomasnet.com/suppliers/minnesota/all-cities/box-build-cable-assemblies-9632506
61
qesidyne.com
qesidyne.com
62
sbcinc.com
sbcinc.com/products-services/electronic-box-builds
We do this at our 60K sq. ft. facilities located in Chandler Arizona.
63
thomasnet.com
thomasnet.com/suppliers/north-carolina/all-cities/electronic-manufacturing-services-ems-95930764
64
unicomengineering.com
unicomengineering.com/services/system-integration
65
thomasnet.com
thomasnet.com/suppliers/southern-california/all-cities/box-build-assembly-contract-manufacturing-96139704
66
globalspec.com
globalspec.com/local/1890/C_US/NH
67
thomasnet.com
thomasnet.com/suppliers/minnesota/all-cities/electromechanical-oem-component-contract-manufacturing-17872920
68
thomasnet.com
thomasnet.com/suppliers/usa/electronic-contract-manufacturing-17873050
69
thomasnet.com
thomasnet.com/suppliers/usa/box-build-assembly-contract-manufacturing-96139704
70
pcbark.com
pcbark.com/blog/box-build-assembly-manufacturers
71
swimbi.com
swimbi.com/ems-manufacturing-factories
72
technotronix.us
technotronix.us/pcbblog/top-ems-provider
73
proactivepcb.com
proactivepcb.com/articles/full-system-integration/as9100-box-build-manufacturers
74
vse.com
vse.com/blog/top-electronic-contract-manufacturers-in-the-usa
75
automation-list.com
automation-list.com/en/country/united-states
76
precisionam.com
precisionam.com/articles/aerospace/us-as9100-aerospace-manufacturers-directory
77
shamrockprecision.com
shamrockprecision.com/why-as9100-and-itar-compliance-now-define-access-to-americas-defense-aerospace-supply-chain

Make PEKO lead, Foxtronics second source, Astro and Sierra fallbacks.

Send the RFQ to all four, starting with PEKO.

Who gets the RFQ

Next steps

PEKO scores 24 of 24; Foxtronics 22.

PEKO

References

Strengths

Recent news

Company channels

Foxtronics and Astro

Strengths

Recent news

Company channels

References

Strengths

Recent news

Company channels

LeeMAH carries three of the five risks to manage.

Eight questions for the RFQ, by supplier.

How the scorecard was scored

What is behind each score

How the study was run

How the study was run

How the study was run

Numbered sources

Numbered sources

Numbered sources