Corporate Information

Enabling Technology Innovators

Through the pursuit of creating unsurpassed value, we contribute to expanding the possibilities of customers oriented toward technological innovation and also to the broader prosperity of society. - Brand Promise

Junkosha’s Business Policy

Our Brand Promise is made up of three simple, direct words:
Enabling, Technology, and Innovators.
It encapsulates our passion to work with customers who are genuine innovators at the leading edge in every field of industry and our desire to contribute to their work through solutions with value.
Our strong customer orientation that has been at our core since establishment in 1954 is also captured by these three words.

Junkosha constantly advances its leading-edge high-performance polymer technologies and embraces the challenge of next-generation technology in order to provide the ultimate in unsurpassed value to our customers, the technology leaders changing the world. By doing so, our aim is to be a global company trusted by customers and end users everywhere, ultimately contributing to sustained growth worldwide.

Company Overview

Company Name Junkosha Inc.
Founded April 26, 1954


  • Tokyo Business Center
    15F Ochanomizu Kyoun Bldg.
    2-2 Kanda-Surugadai, Chiyoda-ku
    Tokyo 101-0062 Japan
    P+81 3 3518 6520 F+81 3 3518 6523
  • Kasama Operations Center
    961-20 Fukuda, Kasama-shi
    Ibaraki-ken 309-1603 Japan
    P+81 296 70 2000 F+81 296 70 2035
  • Yamanashi Operations Center
    881-1 Ishibashi, Sakaigawa-cho
    Fuefuki-shi, Yamanashi-ken 406-0842 Japan
    P+81 55 266 5400 F+81 55 266 5405
  • Osaka Sales Office
    3F SYNTH Dojima Axis Bldg.
    2-2-28 Dojimahama, Kita-ku, Osaka 530-0004 Japan


  • Junkosha SOC / ATC Inc.
    Bldg. 33
    Export Processing Zone Supporting Industrial Park
    No. 666 Jianlin Road
    Suzhou New District
    Suzhou, Jiangsu
    215151 P.R.China
    P +86 512 6920 0218 F +86 512 6920 0238
  • Junkosha STC Inc.
    Room 20310, No. 95 Qiming Road
    Suzhou Industrial Park
    Suzhou, Jiangsu
    215000 P.R.China


Junkosha USA Inc. (West Coast Office)
2415 Campus Drive
Suite 140
Irvine, CA 92612
P +1 949 825 6177


Junkosha USA Inc. (European Office)
113 The Promenade
GL50 1NW
P +44 1242 248 703