Company lists · Data refreshed September 2026

Top 25 Contract assembly manufacturers worldwide

Name: Contract assembly manufacturers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 5,507 companies tracked

RevenueBase identified 5,507 contract assembly manufacturers worldwide as of September 2026 and tracks 120,752 professional contacts across them, including 27,150 with verified work emails and 0 with mobile numbers. The United States is the largest market and Shenzhen the largest hub.

This list covers contract assembly manufacturers worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026. Country and city lists for contract assembly manufacturers follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

5,507Companies

120,752Contacts tracked

27,150Verified emails

0Mobile numbers

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The 25 largest contract assembly manufacturers worldwide

Ranked by team size

Top 25 of 5,507 contract assembly manufacturers worldwide, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to contract assembly manufacturers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Plexus Corp	Indirect evidence	Neenah, NC, United StatesHQ checked Sep 16, 2026	10001+	8,149 contacts →
	Indirect evidence “Since 1979, Plexus has been partnering with companies to create the products that build a better world.” Source: RevenueBase Database · checked Sep 16, 2026
2	Pegatron	Indirect evidence	Taipei, TaiwanHQ checked Sep 16, 2026	5,001-10,000	6,816 contacts →
	Indirect evidence “PEGATRON Corporation (“PEGATRON”) is a global provider of design and manufacturing services (DMS) for electronics products.” Source: RevenueBase Database · checked Sep 16, 2026
3	Kimball Electronics	Indirect evidence	Jasper, IN, United StatesHQ checked Sep 16, 2026	5,001-10,000	2,192 contacts →
	Indirect evidence “Kimball Electronics was founded in 1961.” Source: RevenueBase Database · checked Sep 16, 2026
4	Syrma SGS Technology Limited	Indirect evidence	Chennai, IndiaHQ checked Sep 16, 2026	5,001-10,000	2,005 contacts →
	Indirect evidence “Syrma SGS specializes in collaboration: whether you’re an iconic brand or a visionary startup, we’ll partner with your product team to deliver top-notch electronics manufacturing…” Source: RevenueBase Database · checked Sep 16, 2026
5	Aequs Limited	Partial evidence	Belgaum, IndiaHQ checked Sep 16, 2026	1,001-5,000	1,882 contacts →
	Partial evidence “Aequs is a diversified contract manufacturing company providing vertically integrated product solutions across the Aerospace, Toys and Consumer Durable Goods industries.” Source: RevenueBase Database · checked Sep 16, 2026
6	Asteelflash	Indirect evidence	St.-cloud, FranceHQ checked Sep 16, 2026	5,001-10,000	1,534 contacts →
	Indirect evidence “Asteelflash is a global leader in Electronic Manufacturing Services (EMS) and Supply-Chain Management solutions, part of USI (SSE: 601231), Universal Scientific Industrial…” Source: RevenueBase Database · checked Sep 16, 2026
7	Avalon Technologies Limited	Indirect evidence	Chennai, IndiaHQ checked Sep 16, 2026	1,001-5,000	1,438 contacts →
	Indirect evidence “For 20+ years, Avalon Technologies, has been a choice for large global MNC companies that are into Medical, Telecommunication, Railways, Power, Aerospace & Defense and Industrial…” Source: RevenueBase Database · checked Sep 16, 2026
8	GPV	Indirect evidence	Vejle, DenmarkHQ checked Sep 16, 2026	5,001-10,000	1,276 contacts →
	Indirect evidence “GPV is one of Europe’s leading EMS (Electronics Manufacturing Services) companies.” Source: RevenueBase Database · checked Sep 16, 2026
9	金寶集團 Kinpo Group	Indirect evidence	New Taipei City, TaiwanHQ checked Sep 16, 2026	10001+	990 contacts →
	Indirect evidence “Founded in 1973, KINPO GROUP, with more than employees globally, is a world-renowned industrial conglomerate, including Kinpo Electronics, Cal-Comp, and CastleNet, with a global…” Source: RevenueBase Database · checked Sep 16, 2026
10	Smtc Corporation	Partial evidence	Melbourne, FL, United StatesHQ checked Sep 16, 2026	1,001-5,000	971 contacts →
	Partial evidence “SMTC is a global Electronics Manufacturing Services (EMS) provider, delivering fully integrated and customized contract manufacturing services.” Source: RevenueBase Database · checked Sep 16, 2026
11	Keytronic	Strong evidence	Spokane Valley, WA, United StatesHQ checked Sep 16, 2026	1,001-5,000	819 contacts →
	Strong evidence “Keytronic is a value-added contract manufacturer to some of the world’s leading OEMs.” Source: RevenueBase Database · checked Sep 16, 2026
12	MICRO	Strong evidence	Somerset, NJ, United StatesHQ checked Sep 16, 2026	501-1,000	723 contacts →
	Strong evidence “MICRO is a full service contract manufacturer that draws on more than 80 years of experience in medical device assembly, precision metal stamping, insert and injection molding…” Source: RevenueBase Database · checked Sep 16, 2026
13	Scanfil Group	Indirect evidence	Sievi, FinlandHQ checked Sep 16, 2026	1,001-5,000	701 contacts →
	Indirect evidence “Scanfil is a trusted end-to-end manufacturing partner with a Nordic heritage.” Source: RevenueBase Database · checked Sep 16, 2026
14	Escatec	Indirect evidence	Bayan Lepas, MalaysiaHQ checked Sep 16, 2026	1,001-5,000	669 contacts →
	Indirect evidence “Our Mission - Enabling customer success by delivering innovative products that move the world forward.” Source: RevenueBase Database · checked Sep 16, 2026
15	ASE Electronics M SDN BHD	Indirect evidence	Bayan Lepas, MalaysiaHQ checked Sep 16, 2026	1,001-5,000	652 contacts →
	Indirect evidence “A Success Enabler ASE Electronics (M) Sdn.” Source: RevenueBase Database · checked Sep 16, 2026
16	OSI Electronics	Indirect evidence	Hawthorne, CA, United StatesHQ checked Sep 16, 2026	1,001-5,000	634 contacts →
	Indirect evidence “OSI Electronics is a global Manufacturing Solutions provider headquartered in Hawthorne, CA, and Singapore.” Source: RevenueBase Database · checked Sep 16, 2026
17	IEC Electronics Corp	Indirect evidence	Newark, NY, United StatesHQ checked Sep 16, 2026	n/a	563 contacts →
	Indirect evidence “IEC Electronics, acquired by Creation Technologies in 2021, is a provider of electronic manufacturing services ("EMS") to advanced technology companies that produce life-saving…” Source: RevenueBase Database · checked Sep 16, 2026
18	Accumed Corp	Partial evidence	Mocksville, NC, United StatesHQ checked Sep 16, 2026	1,001-5,000	559 contacts →
	Partial evidence “AccuMED Corp is a contract manufacturing partner to major medical device companies, providing exceptional, customer-centric solutions of the highest quality on time and at…” Source: RevenueBase Database · checked Sep 16, 2026
19	Tegra Medical	Strong evidence	Franklin, MA, United StatesHQ checked Sep 16, 2026	501-1,000	510 contacts →
	Strong evidence “Tegra Medical is an end-to-end contract manufacturing solutions provider, known as the company “where medical devices come to life.” Our customers look to us to manufacture…” Source: RevenueBase Database · checked Sep 16, 2026
20	Tessy Plastics Corp	Strong evidence	Skaneateles, NY, United StatesHQ checked Sep 16, 2026	1,001-5,000	499 contacts →
	Strong evidence “Founded in 1973, Tessy Plastics is a global contract manufacturer headquartered in Skaneateles, NY, specializing in injection molding and custom automated assembly solutions.” Source: RevenueBase Database · checked Sep 16, 2026
21	Industria Mecânica Samot Ltda	Indirect evidence	São Bernardo Do Campo, BrazilHQ checked Sep 16, 2026	501-1,000	479 contacts →
	Indirect evidence “Fundada em 1960 pelo atual presidente Tomislav Jancar, a SAMOT iniciou sua oferta de serviços para atender à então recém instalada indústria automobilística no Brasil.” Source: RevenueBase Database · checked Sep 16, 2026
22	Melecs EWS Gmbh	Indirect evidence	Siegendorf, AustriaHQ checked Sep 16, 2026	1,001-5,000	475 contacts →
	Indirect evidence “Melecs EWS GmbH is - with a turnover of 453 million euros and more than 1800 employees - the largest electronics engineering and manufacturing service provider (E2MS) with…” Source: RevenueBase Database · checked Sep 16, 2026
23	Renata Precision Components PVT LTD	Partial evidence	Pune, IndiaHQ checked Sep 16, 2026	201-500	410 contacts →
	Partial evidence “Injection Molding, Tooling,High Speed Stamping,Product Design and Assemblies” Source: RevenueBase Database · checked Sep 16, 2026
24	Mack Technologies	Strong evidence	Westford, MA, United StatesHQ checked Sep 16, 2026	1,001-5,000	405 contacts →
	Strong evidence “Mack Technologies is a leading supplier of printed circuit board assembly, systems assembly, and electronics contract manufacturing services for the defense, communications…” Source: RevenueBase Database · checked Sep 16, 2026
25	Connect Group N.V	Partial evidence	Kampenhout, BelgiumHQ checked Sep 16, 2026	1,001-5,000	404 contacts →
	Partial evidence “With almost 40 years of experience, Connect Group is one of the leading service providers regarding cable, PCB- and module assembly.” Source: RevenueBase Database · checked Sep 16, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: contract assembly manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names contract assembly manufacturers.
Partial evidence: Its own public description names part of contract assembly manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name contract assembly manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 5,507 contract assembly manufacturers worldwide

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Contract assembly manufacturers worldwide at a glance

As of Sep 16, 2026

22.5%Verified-email coverage

21.9Average contacts per company

11-50Median size (employees)

3.6%Largest-city concentration · Shenzhen

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

1,282

11-50

2,119

51-200

1,372

201-500

405

501-1,000

164

1,001-5,000

105

5,001-10,000

10001+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among contract assembly manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: 27 countries, largest first: the United States, China, Germany, Italy, the United Kingdom, India, Canada, France, Brazil, the Netherlands and 17 more. Country and city lists for contract assembly manufacturers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “contract assembly manufacturers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names contract assembly manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among contract assembly manufacturers, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 27,150 across the full list. 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 September 16, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Contract assembly manufacturers by location

31 lists · largest first

Every Contract assembly manufacturers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names contract assembly manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many contract assembly manufacturers are there worldwide?

RevenueBase identified 5,507 contract assembly manufacturers worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Plexus Corp, headquartered in Raleigh, tops this list with the largest team on record.

Which country has the most contract assembly manufacturers?

The United States leads with 1,846 companies, followed by China (521) and Germany (490). Every contract assembly manufacturers list by country and city is linked on this page.

Which city has the most contract assembly manufacturers?

Shenzhen leads with 199 headquartered companies, followed by Bangalore (63) and San Jose (42).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 27,150 verified decision-maker contacts tracked across these 5,507 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.

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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 Smart Search, 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.