CDK produces and markets manganese ferroalloys, rare-earth magnet alloys, and hydrogen storage alloys and other battery materials.

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| Address: | Chiyoda First Bldg., 3-2-1 Nishikanda, Chiyoda-ku, Tokyo 101-0065, Japan |
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| Tel/Fax: | Tel +81-3-3514-0511 Fax +81-3-3514-0560 |
Tozai Line subway, Hanzoumon Line subway: 5 minute walk from Kudanshita station (exit 5)
Shinjuku line: 5 minute walk from Kudanshita station (exit 5)
Hanzoumon Line subway: 5 minute walk from Jinbocho station (exit A2)
Shinjuku line, Mita line: 5 minute walk from Jinbocho station (exit A2)