If you would like to make an any inquiry about our services - sales support or technical support -, products or OKEN corporation - OHYO KOKEN KOGYO CO., LTD. -, please contact the following.

Reference for optical crystals, scintillators.

88-77,Oaza-Shingo,Higashimatsuyama city, SAITAMA 355-0071 JAPAN
Tel +81-493-23-9515
Fax +81-493-23-9516
Email: opt@oken.co.jp

Reference for radiation measuring instruments and applied instruments.
1624-26, Oaza-Kumagawa, Fussa city, TOKYO 197-0003 JAPAN
TEL +81-42-552-4511
Fax +81-42-552-5750
Email: info@oken.co.jp
Reference for others - recruitment, public information, etc.
1624-26, Oaza-Kumagawa, Fussa city, TOKYO 197-0003 JAPAN
TEL +81-42-552-4511
FAX +81-42-552-5750
Email: oken@oken.co.jp
Business hours Monday to Friday 9:00 to 17:20
  Saturday 9:00 to 17:20
  (according to our business calendar)
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