| Name | Koyo Sangyo Ltd. |
| Representative | Shigekatsu Yamanoda |
| Head office | 1-3-9 Uehara, Shibuya-ku, Tokyo |
| Telephone number | 03-6804-8077 |
| info@koyosan.com | |
| Regular holiday | Sundays/holidays |
| 営業時間 | 9:00〜17:00 |
| Name | Koyo Sangyo Ltd. |
| Representative | Shigekatsu Yamanoda |
| Head office | 1-3-9 Uehara, Shibuya-ku, Tokyo |
| Telephone number | 03-6804-8077 |
| info@koyosan.com | |
| Regular holiday | Sundays/holidays |
| 営業時間 | 9:00〜17:00 |