| Representative | Yosuke Ozaki | |
| Corporate Overview | Head Quarters | 3-21-18 Higashi-koigakubo, Kokubunji-shi, Tokyo, 185-0014 Japan |
| Established | 1965 | |
| Capital | 90 million yen | |
| No. of Employees | 60 | |
| Website | http://www.okp.jp/english/index.html | |
| Tel | +81-42-321-7170 | |
| Overseas office | None | |
| Corporate Logo |  |
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