Company lists · Data refreshed September 2026

Top 25 Circuit assembly companies worldwide

Name: Circuit assembly companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 4,527 companies tracked

RevenueBase identified 4,527 circuit assembly companies worldwide as of September 2026 and tracks 77,084 professional contacts across them, including 12,891 with verified work emails. The United States is the largest market and Shenzhen the largest hub.

This list covers circuit assembly companies 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 19, 2026. Country and city lists for circuit assembly companies 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 19, 2026 86% judged on-target in blind review

4,527Companies

77,084Contacts tracked

12,891Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest circuit assembly companies worldwide

Ranked by team size

Top 25 of 4,527 circuit assembly companies worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to circuit assembly companies: 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	UTAC	Strong evidence	SingaporeHQ checked Sep 19, 2026	10001+	1,613 contacts →
	Strong evidence “UTAC Holdings Ltd (“UTAC”) is a leading independent provider of assembly and test services for a broad range of integrated circuits with diversified end uses, including…” Source: RevenueBase Database · checked Sep 19, 2026
2	Unimicron	Indirect evidence	桃園市, TaiwanHQ checked Sep 19, 2026	10001+	1,447 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
3	Avalon Technologies Limited	Indirect evidence	Chennai, IndiaHQ checked Sep 19, 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 19, 2026
4	Würth Elektronik Group	Indirect evidence	Niedernhall, GermanyHQ checked Sep 19, 2026	5,001-10,000	1,257 contacts →
	Indirect evidence “About us The Würth Elektronik group of companies, with headquarters in Niedernhall (Hohenlohe), Germany, has about 7,900 employees worldwide and generated global sales of € 1.24…” Source: RevenueBase Database · checked Sep 19, 2026
5	Pt. Katolec Indonesia	Partial evidence	Cikarang, IndonesiaHQ checked Sep 19, 2026	501-1,000	864 contacts →
	Partial evidence “Perusahaan Manufaktur Elektronik (Printed board mounting & Electronic equipment assembly)” Source: RevenueBase Database · checked Sep 19, 2026
6	Keytronic	Indirect evidence	Spokane Valley, WA, United StatesHQ checked Sep 19, 2026	1,001-5,000	819 contacts →
	Indirect evidence “Keytronic is a value-added contract manufacturer to some of the world’s leading OEMs.” Source: RevenueBase Database · checked Sep 19, 2026
7	Viasystems	Indirect evidence	United StatesHQ checked Sep 19, 2026	10001+	688 contacts →
	Indirect evidence “Would you like to be part of a global technology leader focused on bringing the world’s rapidly evolving products to market?” Source: RevenueBase Database · checked Sep 19, 2026
8	PG Electroplast	Indirect evidence	IndiaHQ checked Sep 19, 2026	5,001-10,000	685 contacts →
	Indirect evidence “PG Electroplast Limited (NSE:PGEL) is one of India’s leading players in the Electronic Manufacturing Services space, providing Original Design Manufacturing and Original Equipment…” Source: RevenueBase Database · checked Sep 19, 2026
9	Escatec	Indirect evidence	Bayan Lepas, MalaysiaHQ checked Sep 19, 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 19, 2026
10	Caliber Interconnects	Indirect evidence	Coimbatore, IndiaHQ checked Sep 19, 2026	501-1,000	629 contacts →
	Indirect evidence “Caliber Interconnect is an ISO 9001 certified design house serving to product-based technology business activities that need design and engineering expertise on a flexible basis…” Source: RevenueBase Database · checked Sep 19, 2026
11	健鼎科技股份有限公司	Indirect evidence	ChinaHQ checked Sep 19, 2026	10001+	588 contacts →
	Indirect evidence “Tripod Technology 1998PCB202510 2023Tripod Technology PCB 2.7% Tripod Technology Tripod Technology PCBTripodTechnology” Source: RevenueBase Database · checked Sep 19, 2026
12	IEC Electronics Corp	Indirect evidence	Newark, NY, United StatesHQ checked Sep 19, 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 19, 2026
13	PCB Technologies LTD	Indirect evidence	Ocean Township, NJ, United StatesHQ checked Sep 19, 2026	501-1,000	517 contacts →
	Indirect evidence “PCB Technologies is an All-in-One Solutions provider of high-mix multilayer rigid, rigid-flex and multi-flex PCBs, Substrates, IC Packaging, complex electronic component…” Source: RevenueBase Database · checked Sep 19, 2026
14	PT SAT Nusapersada TBK Ptsn	Strong evidence	Batam, IndonesiaHQ checked Sep 19, 2026	5,001-10,000	490 contacts →
	Strong evidence “PT Sat Nusapersada Tbk began operations as a supplier of printed circuit board and mechanical parts assembly and a manufacture of electronic components.” Source: RevenueBase Database · checked Sep 19, 2026
15	Multek	Partial evidence	Irvine, CA, United StatesHQ checked Sep 19, 2026	5,001-10,000	467 contacts →
	Partial evidence “Multek is a global leader in printed circuit board technology and value-added manufacturing.” Source: RevenueBase Database · checked Sep 19, 2026
16	Digiboard Eletrônica DA Amazônia Ltda	Partial evidence	BrazilHQ checked Sep 19, 2026	501-1,000	436 contacts →
	Partial evidence “Empresa de fabricação de placas e circuitos eletrônicos situada no Polo Industrial de Manaus - Amazonas - Brasil.” Source: RevenueBase Database · checked Sep 19, 2026
17	SGS Tekniks Manufacturing Pvt. LTD	Indirect evidence	Gurgaon, IndiaHQ checked Sep 19, 2026	1,001-5,000	429 contacts →
	Indirect evidence “SGS Tekniks Manufacturing Pvt.” Source: RevenueBase Database · checked Sep 19, 2026
18	Sierra Circuits	Partial evidence	Sunnyvale, CA, United StatesHQ checked Sep 19, 2026	501-1,000	428 contacts →
	Partial evidence “Sierra Circuits has been faithfully serving PCB designers and engineers since 1986, and has worked with over customers since then.” Source: RevenueBase Database · checked Sep 19, 2026
19	Icape Group	Partial evidence	Fontenay-aux-roses, FranceHQ checked Sep 19, 2026	501-1,000	410 contacts →
	Partial evidence “ICAPE Group is a Global Electronics Partner specializing in Printed Circuit Boards and custom-made electronic parts.” Source: RevenueBase Database · checked Sep 19, 2026
20	Mack Technologies	Strong evidence	Westford, MA, United StatesHQ checked Sep 19, 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 19, 2026
21	Connect Group N.V	Partial evidence	Kampenhout, BelgiumHQ checked Sep 19, 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 19, 2026
22	INCAP	Indirect evidence	Helsinki, FinlandHQ checked Sep 19, 2026	1,001-5,000	392 contacts →
	Indirect evidence “Incap Corporation - flexible, agile and efficient electronics manufacturing services.” Source: RevenueBase Database · checked Sep 19, 2026
23	MFLEX	Strong evidence	Irvine, CA, United StatesHQ checked Sep 19, 2026	10001+	389 contacts →
	Strong evidence “Founded in 1984, MFLEX has become one of the largest global flexible circuit manufacturers & assemblers.” Source: RevenueBase Database · checked Sep 19, 2026
24	華泰電子股份有限公司 Orient Semiconductor Electronics	Indirect evidence	高雄市, TaiwanHQ checked Sep 19, 2026	5,001-10,000	348 contacts →
	Indirect evidence “History OSE was established with capital from Dr.” Source: RevenueBase Database · checked Sep 19, 2026
25	NOTE	Indirect evidence	Stockholm, SwedenHQ checked Sep 19, 2026	1,001-5,000	343 contacts →
	Indirect evidence “NOTE produces PCBAs, subassemblies and box build products.” Source: RevenueBase Database · checked Sep 19, 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: circuit assembly companies. 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 circuit assembly companies.
Partial evidence: Its own public description names part of circuit assembly companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name circuit assembly companies. 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 4,527 circuit assembly companies worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 12,891 reachable decision-makers.

Free signup · no credit card

View the full list →

Circuit assembly companies worldwide at a glance

As of Sep 19, 2026

16.7%Verified-email coverage

17.0Average contacts per company

11-50Median size (employees)

9.6%Largest-city concentration · Shenzhen

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

1,214

11-50

1,412

51-200

942

201-500

522

501-1,000

232

1,001-5,000

130

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 circuit assembly companies, 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: Every country. Country and city lists for circuit assembly companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “circuit assembly companies”. 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 circuit assembly companies), 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 circuit assembly companies, 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, 12,891 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 19, 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.

Circuit assembly companies by location

19 lists · largest first

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

Countries

Cities

Circuit assembly companies based in Bangalore, India50

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 circuit assembly companies, 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 circuit assembly companies are there worldwide?

RevenueBase identified 4,527 circuit assembly companies 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?

UTAC, headquartered in Singapore, tops this list with the largest team on record.

Which country has the most circuit assembly companies?

The United States leads with 852 companies, followed by China (807) and India (362). Every circuit assembly companies list by country and city is linked on this page.

Which city has the most circuit assembly companies?

Shenzhen leads with 436 headquartered companies, followed by Bangalore (50) and San Jose (36).

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 12,891 verified decision-maker contacts tracked across these 4,527 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 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 4,527 circuit assembly companies worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

Browse: Companies home · Lists by location · New lists

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.