CORPORATE Corporate Data

Company Philosophy

“Harmony with…”
We co-create value and bring out the best in the materials

・Harmony with Customers
We work with our customers in breathing life and value into products

・Harmony with Future
We continuously strive for future improvements

・Harmony with Society
We grow through our contributions to society

・Harmony with Members
We focus on potential of people

We work together with our customers in utilizing our sophisticated technology to create value (co-creation).
Focus is placed on the characteristics of every product material entrusted to us by our customers so that we may bring out their best traits to the fullest.
Also, we aim to maximize the potentials of every employee involved in such work so that each of us may grow to become an important human capital. It is our wish to realize and maintain harmony with our customers, the future, society and people, and continue to fulfill our social role to the best of our abilities.

Company History

June 1909 Commences operation as a pioneering heat treatment firm in the Kansai region
August 1939 Incorporated as Toyo Kinzoku Netsushori Kenkyujo
October 1960 Tatsumi Factory opens
April 1964 Neyagawa Factory opens
October 1973 Nabari Factory opens
December 1980 Kashiwara Factory opens
April 1981 Ono Factory opens
July 1985 Cera Hard Division opens
August 1985 Tondabayashi Factory opens
April 1988 Industrial Furnace Division opens
November 1989 Mie Factory opens
January 1991 Harima Factory opens
March 1991 Company name is changed to Tohken Thermo Tech Co., Ltd.
July 1995 Thai Tohken Thermo Co., Ltd, a joint firm, is established in Thailand
January 1996 Tohken (M) Sdn. Bbd., a joint firm, is established in Malaysia
May 2009 Cera Hard Division･Chubu office opens
June 2010 Tohken Thermo Suzhou Co., Ltd., a fully owned corporation, is opened in China
May 2012 TOHKEN THERMO MEXICANA, S.A. DE C.V. is opened in Mexico

Company Overview

Company name TOHKEN THERMO TECH CO., LTD.
Head office address 13-2　Nakakida-cho,　Neyagawa-shi,　Osaka　572-0820
Establishment August 1939
President and CEO Ryuji Kawasaki
Capital 88 million yen
Number of employees Regular employee:635
Semi employee: 174 (contract employees, part-time employees, etc.)
※ As of March 20, 2024
Area of Business
  • Heat Treatment of Metals
    Hardening and tempering, Vacuum hardening Solid solution treatment, Magnetic annealing, Carburizing/carbonitriding, Vacuum carburizing (slow cooling), Gas nitrocarburizing, Brazing, Mild press quench, Hydrogen reduction Solid solution treatment
  • Thin-film Coating
    DLC coating, PVD coating,DC coating (polycrystalline diamond coating)
Major customers
（Certification・specification）
  • AISIN CORPORATION
  • AISIN FUKUI
  • AISIN KIKO CO.,LTD
  • Daihatsu Motor Co., Ltd.
  • DENSO CORPORATION.
  • EXEDY Corporation
  • FUSERASHI Co., Ltd.
  • Honda Motor Co., Ltd.
  • ISUZU MOTORS LIMITED
  • JATCO Ltd .
  • JTEKT MACHINE SYSTEMS CORPORATION
  • JTEKT Corporation.
  • Kawasaki Heavy Industries, Ltd.
  • Kobe Steel, Ltd.
  • KUBOTA Corporation.
  • Mazda Motor Corporation
  • Mitsubishi Electric Corporation
  • Mitsubishi Heavy Industries, Ltd.
  • MITSUBISHI MOTORS CORPORATION.
  • Nissan Motor Co., Ltd.
  • NSK Ltd.
  • Panasonic Corporation
  • SUBARU CORPORATION
  • Sumitomo Electric Industries, Ltd.
  • Sumitomo Heavy Industries, Ltd.
  • TOYOTA MOTOR CORPORATION

(Honorifics omitted/In alphabetical order)