주식회사 에스이아이 / SEI CO.LTD

Also known as 에스이아이 · SEI
주식회사 에스이아이 (SEI CO.LTD) is a Korea-based business registered at Muneung-ro, Daedeok-myeon, Anseong-si, Gyeonggi-do (Postal code: 17542). It operates as a head office of a for-profit corporation. It was incorporated at the Suwon District Court, Icheon Registry. 주식회사 에스이아이 (SEI CO.LTD) falls under the Manufacturing industry. It operates within the Semiconductor Devices sector, specifically focusing on Other semiconductor device manufacturing business activities. It has 20–29 employees. According to KOBDi Industry Ranking system, 주식회사 에스이아이 (SEI CO.LTD) scored 101.61 points (up 1.76 points since August 2026) and outperforms approximately 83% of companies in the same industry. Recent performance indicators include: Employee growth: -11.92% (industry average: -2.73%).
주식회사 에스이아이는 경기도 안성시 대덕면에 있는 기타 반도체 소자 제조업 기업입니다.
161-**-*155* 1344**-0089***

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경기도 안성시 대덕면 무능로 (17542)
Muneung-ro, Daedeok-myeon, Anseong-si, Gyeonggi-do (17542)
Head office of a for-profit corporation
Manufacturing > Semiconductor Devices > Other semiconductor device manufacturing
September 2026
-11.92%
2025-2026
16.03%
101.61
▲ 1.76 pts (vs. August 2026)
Top 18%
September 2026

SEI CO.LTD's KOBDi Score is 101.61 as of Sep 2026, up 0.44 points since Apr 2025; it rose in 6 and fell in 6 of the 12 monthly updates. As of Sep 2026 it is ahead of about 83% of companies in its industry, against 82% in Aug 2026 and 80% in Apr 2025. Its strongest position was 85% (Feb 2026) and its weakest 80% (Apr 2025).

A year earlier, in Aug 2025, its score was 102.97 and it was ahead of about 83% of companies in its industry.

Sep 2026101.61ahead of 83%
Aug 202699.85ahead of 82%
Jul 2026100.95ahead of 83%
Jun 202699.26ahead of 82%
May 2026101.75ahead of 83%
Apr 2026103.93ahead of 84%
Mar 2026104.70ahead of 84%
Feb 2026105.00ahead of 85%
Dec 2025104.39ahead of 83%
Aug 2025102.97ahead of 83%
Jul 2025103.00ahead of 82%
May 2025102.11ahead of 81%
Apr 2025101.17ahead of 80%

Between 2025 and 2026, the headcount of SEI CO.LTD changed by -11.92%, against an average of -2.73% in its industry. It now has 20–29 employees.

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에스제이테크 10–19 Top 18%
엠케이시스템 5–9 Top 18%
이텍 10–19 Top 18%
신양전선(주)
SIN YANG Wire & Cable		 10–19 Top 18%
주식회사 티티알
T.T.R		 5–9 Top 18%















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경기도 안성시 대덕면 무능로 (17542)
Muneung-ro, Daedeok-myeon, Anseong-si, Gyeonggi-do (17542)
Where is SEI CO.LTD located?

SEI CO.LTD is registered at Muneung-ro, Daedeok-myeon, Anseong-si, Gyeonggi-do, South Korea (postal code 17542).

What industry is SEI CO.LTD in?

SEI CO.LTD belongs to Manufacturing › Semiconductor Devices › Other semiconductor device manufacturing.

How many employees does SEI CO.LTD have?

SEI CO.LTD has 20–29 employees.

What is SEI CO.LTD's KOBDi Score?

101.61 as of September 2026, ahead of about 83% of companies in its industry.

Who are SEI CO.LTD's competitors?

Similar companies include 에스제이테크, 엠케이시스템 and 이텍.

Which businesses are near SEI CO.LTD?

Businesses registered at the same postal code (17542) include Anseong Livestock Cooperative Fiber Mixed Feed, 대덕식품 and 장난감왕국. Most work in manufacture of synthetic resins and other plastic materials, manufacturing of other structural metal products and Korean general restaurant business.

Businesses near SEI CO.LTD

Registered at postal code 17542 (무능로, 안성시). Most businesses here work in manufacture of synthetic resins and other plastic materials, manufacturing of other structural metal products and Korean general restaurant business.

Other other semiconductor device manufacturing companies in 안성시

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