| Head Office |
1433-1 Haraichi, Annaka-shi, Gunma 379-0133 |
| Tokyo Office |
4th Floor, Shimbashi MM BLDG, 1-18-14, Shimbashi, Minato-Ku, Tokyo 105-0004
Tel :03-3503-4861 |
| Nagoya Office |
95-6 Ronowari Minami-Shibata-Machi, Tokai-shi, Aichi 476-0001 |
| Osaka Office |
3rd Floor, Sakurabashi Yachiyo BLDG, 2-5-6 Umeda, Kita-Ku, Osaka-shi, Osaka 530-0001 |
| Laboratory of Applied Clay Technology (LACT) |
1433-1 Haraichi, Annaka-shi, Gunma 379-0133 |
| Annaka Factory |
110 Nakajyuku, Annaka-shi, Gunma 379-0115 |
| Nagoya Factory |
95-6 Ronowari Minami-Shibata-Machi, Tokai-shi, Aichi 476-0001 |
| Gunma Mine |
869 Kamikuroiwa Tomioka-shi, Gunma 370-2345 |
| Mikawa Mine |
1588 Tsunaki Agamachi Higashikanbara-Gun, Niigata 959-4601 |
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