ABOUT

COMPANY

Name: DAISHIN SEIKI CORPORATION
Capital: 10,000,000 Yen
President: CEO Ryosuke Omachi
Establishment: April, 1960
Business: Prototype parts for two-wheeled and four-wheeled vehicles, racing parts, aerospace parts, defence parts, outboard motor parts, semiconductor parts, vacuum parts, robot parts, prototype development support, various jig production, general machining and
DDS Design Development (Daishin Design Studio)

GREETING

Thank you for visiting the official website of Daishin Seiki.

Since our founding in 1960, we have remained fully committed to the art of manufacturing, continuously refining our high-precision machining technologies to exceed customer expectations.
Today, we offer a fully integrated production system that combines precision machining with in-house casting, enabling us to flexibly handle a wide range of client needs—from urgent turnaround requests to highly complex technical challenges.
Through our original brand, DDS, we continue to release innovative products and technical samples that fuse cutting-edge engineering with inspired design.
CREATE IMAGINATION
Our driving force is imagination—the power to shape the unknown into form.
With this spirit, Daishin Seiki will continue to take on bold challenges and explore new possibilities in manufacturing.
We sincerely appreciate your continued support and partnership in the years to come.

CEO Ryosuke Omachi

Ryosuke Omachi

TECHNICAL SALES

We will do our best to support your challenge.

Takuya Hoshitsuki

Things I'm into lately:
Indian curry and
Vietnamese food
Syunsuke Omachi

Things I'm into lately:
Dog-run tours
Tadashi Wakatsuki

Things I'm into lately:
Drinking at home

Go Uekawa

Things I'm into lately:
Listening to music,
competitive mahjong (M-League)
Yasunori Hashimoto

Things I'm into lately:
My beloved car

Company Logo Story

Shape The initial "D" in DAISHIN is curved to represent our quick response.The straight line inside expresses credibility between our customers.We also blended the sharp edge to express our strong direction and the rounded shape to reflect our flexible response.The italic letter expresses an image of our soulful specialists who advance and uprise by seeking a higher quality.These are the qualities necessary for creating prototypes at Daishin. Color Dark blue expresses credibility and our strength of technology.

DAISHINHISTORY

1960

Founder: Minoru Omachi established "OMACHI SEISAKUSHO" from the capital 500,000 Yen in Narimasu Tokyo, Japan.Started automobile, compressor, and engine parts and components manufacturing services.
1969

For business expansion, the company moved to Hizaorichou Asaka-shi Saitama-ken and created a new factory.
1970

Established "MINORU SEIKI" with a captal of 4,200,000 Yen.
1980

Renamed company name as "DAISHIN SEIKI CORPORATION" with capital uprising to 1,000,000 Yen.
1982

Expand the factory for business expansion.
1989

Expand the factory and office to install new devices and to improve work efficiency.
1994

Omachi Minoru resigned from the presidency and was inaugurated as the office of chairman. Omachi Yukio became the president.
2003

Acquire a 1760㎡ industrial site in the same history.
2005

New Factory was inaugurated. Yukio Omachi resigned as the president and was inaugurated as the office of chairman.Ryosuke Omachi became the president. Removed to the new factory.
2008

Opened Kawaguchi business division in motogou Kawaguchi-shi Saitama prefecture. South Factory started operation. From that time, Kawaguchi's business department closed. Our company has been selected as Saitama-prefecture, Sainokuni, factory.
2009

Win a gold prize at the “Cutting Dream Contest” hosted by MORISEIKI. ISO 9001/ISO 14001 were both acquired. Awarded “Shinkin Central Bank Director Award” as an excellent company commendation. DDS design division (Daishin Design Studio) opened. CAM AWARD first time awarded Japanese company.
2010

DDS products get certified by MORISEIKI.
2012

Issued first-time unsecured debenture, guaranteed with Resona Bank.
2014

Issued second-time unsecured debenture, guaranteed with Resona Bank. Received the Nishiumi Memorial Award from the Saitama Industrialists Club.
2015

Acquired JISQ9100 aerospace quality certification standard.
2016

Issued third-time unsecured debenture, guaranteed with Resona Bank.
2020

Made the SDGs declaration as a responsibility for the future.
2022

Declaration on partnership building was made for co-existence and co-prosperity throughout the supply chain and for new cooperation beyond scale and affiliations.
2024

Started casting business.