Company lists · Data refreshed November 2026

Top 25 Shielding effectiveness testing services based in the United States

RevenueBase identified 57 company matches for shielding effectiveness testing services associated with the United States as of November 2026 and tracks 690 professional contacts across them, including 193 with verified work emails. New Castle is the largest hub.

This list covers company matches for shielding effectiveness testing services associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 1, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 1, 2026 How this list was built
57Companies
690Contacts tracked
193Verified emails
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The 25 largest shielding effectiveness testing services based in the United States

Ranked by team size
Top 25 of 57 company matches for shielding effectiveness testing services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 1, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchDowners Grove, IL, United StatesHQ recorded Nov 1, 202651-20098 contacts →

Exact match

“Founded in 1954, Elite Electronic Engineering, Inc.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
2Exact matchMariposa, CA, United StatesHQ recorded Nov 1, 202611-5068 contacts →

Exact match

“Founded in 1973, CKC Laboratories offers premier EMC Testing and Design Consultation services.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
3Exact matchTampa, FL, United StatesHQ recorded Nov 1, 202651-20060 contacts →

Exact match

“Leader Tech is a world-leading innovator and U.S.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
4Exact matchSaxonburg, PA, United StatesHQ recorded Nov 1, 202651-20044 contacts →

Exact match

“Has been the leader in solving both simple & complex shielding problems for nearly 40 years.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
5Exact matchNew Castle, PA, United StatesHQ recorded Nov 1, 202611-5035 contacts →

Exact match

“Applus Keystone+ specializes in streamlining the burden of regulatory compliance testing.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
6Exact matchRolla, MO, United StatesHQ recorded Nov 1, 202611-5020 contacts →

Exact match

“ESDEMC designs, manufactures ESD and EMC related products.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
7Exact matchPleasanton, CA, United StatesHQ recorded Nov 1, 202611-5016 contacts →

Exact match

“Founded in 2001, MiCOM Labs has established itself as a global leader in Wireless, and EMC testing and regulatory compliance certification.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
8Exact matchLincoln, NE, United StatesHQ recorded Nov 1, 202611-5015 contacts →

Exact match

“NCEE Labs, founded in 1998, provides FCC, CE, and worldwide EMC/wireless testing, Product Safety, Reliability, and X-Ray testing, as well as wireless certification to large and…”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
9Exact matchTulsa, OK, United StatesHQ recorded Nov 1, 202611-5014 contacts →

Exact match

“From our launch in 1986, Braden Shielding Systems grew to be a worldwide leader in the design, manufacturing, and installation of Radio Frequency (RF) and Magnetic Shielding…”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
10Exact matchFredericksburg, VA, United StatesHQ recorded Nov 1, 202611-5014 contacts →

Exact match

“Whether it’s a research center, medical facility, laboratory, or commercial/residential high-rise buildings, Vitatech has the expertise and experience to provide guaranteed…”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
11Exact matchIrving, TX, United StatesHQ recorded Nov 1, 202611-5012 contacts →

Exact match

“AP Americas is one of the leading global manufacturers of anechoic chambers and shielded rooms for various applications in EMC, antenna testing and high-frequency technology.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
12Exact matchGrand Rapids, MI, United StatesHQ recorded Nov 1, 202611-5012 contacts →

Exact match

“E3 Compliance is an ITAR Registered independent engineering consulting company located in downtown Grand Rapids, Michigan.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
13Exact matchRomeoville, IL, United StatesHQ recorded Nov 1, 20261-1012 contacts →

Exact match

“EMC testing is our specialty.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
14Exact matchLake Forest, CA, United StatesHQ recorded Nov 1, 202611-5012 contacts →

Exact match

“Specializes in EMC testing and approvals for FCC and CE Mark compliance under the Electromagnetic Compatibility Directive.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
15Exact matchHillsboro, OR, United StatesHQ recorded Nov 1, 202611-509 contacts →

Exact match

“Accredited, commercial EMC compliance testing with locations in California, Minnesota, Oregon, Washington, and Texas.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
16Exact matchChino, CA, United StatesHQ recorded Nov 1, 2026501-1,0008 contacts →

Exact match

“Established in 1966,Kern Engineering & Manufacturing Corp.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
17Exact matchLos Angeles, CA, United StatesHQ recorded Nov 1, 202611-506 contacts →

Exact match

“Field Management Services (FMS) is a professional engineering company, which was founded in 1995.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
18Exact matchVictor, NY, United StatesHQ recorded Nov 1, 202611-506 contacts →

Exact match

“SFI is the premier US manufacturer of Select-A-Shield™ EMI shielding and RF isolation products including portable, flexible, high-attenuation, custom EMI shielding tents…”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
19Exact matchColorado Springs, CO, United StatesHQ recorded Nov 1, 20261-104 contacts →

Exact match

“Shielding Integrity Services,(SIS) was founded in 1988.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
20Exact matchGilroy, CA, United StatesHQ recorded Nov 1, 202611-504 contacts →

Exact match

“Scientific Hardware Systems provides RF Shielding solutions to satisfy even the most stringent specifications.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
21Exact matchDeer Park, NY, United StatesHQ recorded Nov 1, 20261-104 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
22Exact matchManassas Park, VA, United StatesHQ recorded Nov 1, 20261-103 contacts →

Exact match

“Absolute EMC LLC is a trusted leader in EMC testing, standards, and equipment solutions, bringing decades of expertise to the industry.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
23Exact matchPoway, CA, United StatesHQ recorded Nov 1, 202611-502 contacts →

Exact match

“Installation, Relocation, Repair and Isolation Verification of RF Shielded Enclosures and Screen Rooms is at the core of our comprehensive market solutions.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
24Exact matchJessup, MD, United StatesHQ recorded Nov 1, 202611-502 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
25Exact matchNew York, NY, United StatesHQ recorded Nov 1, 20261-102 contacts →

Exact match

“ELEXANA LLC is an independent Electromagnetic Integrity Engineering™ firm specializing in the design, evaluation, and improvement of electrical and electronic systems where…”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase

Showing 25 of 57 shielding effectiveness testing services based in the United States

See the full list, filter by size, metro and specialty, and access 193 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Shielding effectiveness testing services based in the United States at a glance

As of Nov 1, 2026
28.0%Verified-email coverage
12.1Average contacts per company
11-50Median size (employees)
5.3%Largest-city concentration · New Castle
Nov 1, 2026Page data refreshed

Companies by employee count

1-10
21
11-50
28
51-200
7
501-1,000
1

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 57 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “shielding effectiveness testing services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 193 professional contacts with verified work emails across the full matched dataset. 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 November 1, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “shielding effectiveness testing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many shielding effectiveness testing services are there based in the United States?

RevenueBase identified 57 company matches for shielding effectiveness testing services associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Elite Electronic Engineering, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most shielding effectiveness testing services?

New Castle leads with 3 company records, followed by Fairfield (2) and Fullerton (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 193 professional contacts with verified work emails tracked across these 57 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 1, 2026.

Ready to reach these companies? Verified emails and direct dials for all 57 shielding effectiveness testing services based in the United States. Start with a free account, no credit card.

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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 SmartSearch, 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.