Sep Co., Ltd

SEP is a privately owned South Korean printed circuit board and contract manufacturing company, founded in 1993.

Appliances; Electrical; and Electronics Manufacturing

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Headquarters: Suwon-si, South KoreaSource: RevenueBaseRetrieved October 13, 2026
Employee range: 201 to 500Source: RevenueBaseRetrieved October 13, 2026
Founded: 1993Source: RevenueBaseRetrieved October 13, 2026
Published list appearances: 5 supported appearances ↗Source: RevenueBase lists

The company at a glance

What does Sep Co., Ltd do?

SEP supports customers from new product introduction through scale-up to volume manufacturing across the customer design cycle.

Based on the company’s public LinkedIn information, supplied through RevenueBase.

Who it serves

SEP serves sectors including automotive, consumer electronics, networking and communications, telecommunications, aerospace and military, medical, computing and storage, and cellular.

What the business offers

Services & capabilities.

Printed circuit board manufacturing

SEP offers solutions supporting fabrication of complex and advanced-technology printed circuit boards.

Source: LinkedIn company description · Retrieved October 13, 2026

Electronic assembly manufacturing

SEP offers solutions supporting fabrication of sophisticated electronic assemblies.

Source: LinkedIn company description · Retrieved October 13, 2026

Explore the business in context

Snapshot: September 29, 2026

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Sep Co., Ltd

#2 Manufacturing services

Snapshot: September 20, 2026

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  <img src="https://revenuebase.ai/companies/profiles/sep-4/recognition-companies-manufacturing-services-south-korea-20260921-03d9844d9283fb8a90921c90efa4b4cdf27e8957425446f4dfabb96cfd6a9d34.svg" alt="Sep Co., Ltd listed #2 on Manufacturing services, September 20, 2026" width="220" height="319" style="max-width:100%;height:auto;" />
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Sources & data notes.

RevenueBase prepared this profile from the company’s public LinkedIn information and RevenueBase company data. These source records were retrieved on October 13, 2026. AI helped summarize these sources, with a separate automated check against the source text completed on November 4, 2026. Directory positions use company-contact counts from separate saved list snapshots dated September 16, 2026, September 20, 2026, September 29, 2026 and October 9, 2026. How the company lists are built.

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