Toyo Rikagaku Kenkyusho, Ltd (東陽理化学研究所) is a Japanese company based in Tsubame-City, Niigata, whose core business is metalworking technologies.
| Industry | Metalworking |
|---|---|
| Founded | Niigata (April 5, 1950) |
| Headquarters | Niigata, Japan |
Key people | Kunihiko Hongo, CEO |
Number of employees | 500 (2004) |
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