| Evagreen Co., Ltd | http://www.evagreen.jp/ |
|---|---|
| Tokyo Chamber of Commerce and Industry | http://www.tokyo-cci.or.jp/ |
| Industrial Diamond Association of Japan | http://www.alles.or.jp/~idajapan/ |
| Jairo cosulting Co., Ltd. | http://www.jairo.co.jp/ |
| PC BRAIN Inc. | http://www.pcbrain.co.jp/ |