Welcome to OS Seiko Web Site!
OS Seiko is a company specializing in the manufacturing and design of industrial parts, automotive parts, test sockets for semiconductor, and other electronic products.
Our products are used in various fields from IT, IC, automobiles, aircraft to medical.
We manufacture products that are in demand around the world with technology that supports 2 nanometer pattern widths.
Our future development is focused on the global market. Last year, we built a new plant and expanded our facilities to handle products used in fuel cells for the U.S. market. We established a branch office in Hawaii, U.S.A. at the end of last year.
Business Content
Design and manufacture various inspection jigs such as IC test sockets and test heads for 5G, 6G mobile phones.
Manufacture parts such as ultra-fine hole machining on consignment from manufacturers of test probes and IC test sockets. Production of heating parts for European cars. …
Our Company
We prioritize product development for clients demands with our robust technical skills towards achieving the “glocalization” by contributing to our important local and global communities.
We offer solutions for your inspection process of superfine electrical equipment by providing custom-made parts as your need.
News & Information
We exhibited at the SEMICON WEST 2023, San Fransisco!
July 11-13, 2023 @ MOSCONE CENTER.
We exhibited test socket boards with ultra-fine holes (20μm~) made of various materials such as ceramic, resin, aluminum, and metal, also drill of very small diameter.
Head Office
3-20-20Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-0206, Japan
Hawaii Office
1000 Auahi St, Unit 2503, Honolulu, HI 96814, USA.