Verified Nov 2026
Electronics & Software
·
Tokyo, Tokyo
·
Since 1949
Tokyo Seimitsu Co., Ltd., which operates under the ACCRETECH name, is a Japanese manufacturer of precision measurement and semiconductor equipment, headquartered in Tokyo and founded in 1949. It is publicly listed under ticker 7729.T and reports between 1,000 and 5,000 employees. The company serves the automotive, electronics, and industrial equipment sectors, with products used in semiconductor test and assembly, wafer production, and general manufacturing quality control. In a recent development, the company announced it had received the Texas Instruments 2025 Supplier Excellence Award.
Tokyo Seimitsu Co., Ltd. (Accretech) at a glance
Revenue
1B
Employees
1,000-5,000
Founded
1949
Headquarters
Tokyo, Tokyo
Ownership
Publicly traded (JPX: 7729.T)
Certifications
ISO 14001 · ISO 9001
Industries
Automotive
Electronics
Industrial Equipment
STABILITY SIGNALS
Established & strong
77 years in operation (founded 1949).
Publicly listed; no distress event on record.
Holds ISO 14001, ISO 9001 certification(s) per public sources.
Overview
Tokyo Seimitsu Co., Ltd., which operates under the ACCRETECH name, is a Japanese manufacturer of precision measurement and semiconductor equipment, headquartered in Tokyo and founded in 1949. It is publicly listed under ticker 7729.T and reports between 1,000 and 5,000 employees. The company serves the automotive, electronics, and industrial equipment sectors, with products used in semiconductor test and assembly, wafer production, and general manufacturing quality control. In a recent development, the company announced it had received the Texas Instruments 2025 Supplier Excellence Award.
At a glance
Attribute | Detail |
|---|---|
Founded | 1949 |
Headquarters | Tokyo, Tokyo |
Employees | 1,000-5,000 |
Revenue | 1B |
Ownership | Publicly traded (JPX: 7729.T) |
Primary capability | Electronics & Software |
Certifications | ISO 14001 · ISO 9001 |
What Tokyo Seimitsu Co., Ltd. (Accretech) makes
The company holds ISO 9001 and ISO 14001 certifications and offers non-contact measurement products such as the Opt-scope 3D microscope and the ZEISS O-INSPECT multi-sensor measuring machine.
Certifications
Tokyo Seimitsu Co., Ltd. (Accretech) is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
ISO 14001 — accretech.com
ISO 9001 — accretech.com
Latest developments
2026-10-29 — 合弁会社におけるハブブレード量産拠点の設置決定に関するお知らせ | ACCRETECH - 東京精密 (accretech.com)
2026-07-10 — 半導体社千歳出張所 開設のお知らせ | ACCRETECH - 東京精密 (accretech.com)
2026-04-03 — Tokyo Seimitsu Recognized for the Texas Instruments 2025 Supplier Excellence Award | NEWS | ACCRETECH - TOKYO SEIMITSU (accretech.com)
2025-12-16 — Tokyo Seimitsu and Advantest Announce Joint Development of Die-Level Prober | News | ACCRETECH - TOKYO SEIMITSU (accretech.com)
2025-11-19 — Suzuki and Tokyo Seimitsu Establish Battery Evaluation Testing Facility in Fukushima Prefecture | ACCRETECH - TOKYO SEIMITSU (accretech.com)
2025-08-27 — Completion of Nagoya Plant, a new plant aimed at strengthening production capacity in the semiconductor production equipment business | ACCRETECH - TOKYO SEIMITSU (accretech.com)
Company details
The company's public listing and reported revenue band of 1B place it among mid-sized Japanese suppliers in the semiconductor manufacturing equipment market. Tokyo Seimitsu Co., Ltd. (Accretech) was founded in 1949, has an estimated 1,000-5,000 employees, and is headquartered in Tokyo, Tokyo. On the LightSource stability read it is rated "Established & strong": 77 years in operation (founded 1949). Publicly listed; no distress event on record. Holds ISO 14001, ISO 9001 certification(s) per public sources.
Frequently asked questions
What does Tokyo Seimitsu Co., Ltd. (Accretech) make?
Tokyo Seimitsu Co., Ltd., which operates under the ACCRETECH name, is a Japanese manufacturer of precision measurement and semiconductor equipment, headquartered in Tokyo and founded in 1949. It is publicly listed under ticker 7729.T and reports between 1,000 and 5,000 employees. The company serves the automotive, electronics, and industrial equipment sectors, with products used in semiconductor test and assembly, wafer production, and general manufacturing quality control. In a recent development, the company announced it had received the Texas Instruments 2025 Supplier Excellence Award.
Where is Tokyo Seimitsu Co., Ltd. (Accretech) headquartered?
Tokyo Seimitsu Co., Ltd. (Accretech) is headquartered in Tokyo, Tokyo.
When was Tokyo Seimitsu Co., Ltd. (Accretech) founded?
Tokyo Seimitsu Co., Ltd. (Accretech) was founded in 1949.
How big is Tokyo Seimitsu Co., Ltd. (Accretech)?
Tokyo Seimitsu Co., Ltd. (Accretech) has an estimated 1,000-5,000 employees, with revenue in the 1B range.
Is Tokyo Seimitsu Co., Ltd. (Accretech) publicly traded?
Publicly traded (JPX: 7729.T). Public financial figures are drawn from its filings.
What certifications does Tokyo Seimitsu Co., Ltd. (Accretech) hold?
Tokyo Seimitsu Co., Ltd. (Accretech) lists ISO 14001 · ISO 9001 on its website. Confirm the certified scope for the specific plant producing your part.
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