Links
KUMIAI CHEMICAL INDUSTRY CO., LTD.
| Main Office | 4-26, Ikenohata 1-chome, Taito-ku, Tokyo 110-8782 (Kumiai Industry Bld.) |
| URL | https://www.kumiai-chem.co.jp/ |
RIKENGREEN CO., LTD.
| Main Office | 12-20, Ueno 2-chome, Taito-Ku, Tokyo 110-0005 |
| URL | https://www.rikengreen.co.jp/ |
IHARANIKKEI CHEMICAL INDUSTRY CO., LTD.
| Main Office | 5700-1, Kanbara, shimizu-ku, shizuoka-shi, Shizuoka-ken 421-3203 |
| URL | https://www.iharanikkei.co.jp/ |
NEP (NIPPON ENVIRONMENTAL PROTECTION)
| Main Office | 4-26, Ikenohata 1-chome, Taito-ku, Tokyo 110-8782 (Kumiai Industry Bld.) |
| URL | https://www.kk-nep.co.jp/ |
