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| Company Name | Challenge Co., Ltd. |
| Headquarters | Livera Shinokachimachi 4F, 2-14-4, Kojima, Taito-ku, Tokyo, JAPAN, 111-0056 |
| TEL | 81-3-5809-2304 |
| FAX | 81-3-5809-2305 |
| Email address | challengego@challengego.co.jp |
| Company Name | Challenge Co., Ltd. |
| Headquarters | Livera Shinokachimachi 4F, 2-14-4, Kojima, Taito-ku, Tokyo, JAPAN, 111-0056 |
| TEL | 81-3-5809-2304 |
| FAX | 81-3-5809-2305 |
| Email address | challengego@challengego.co.jp |