| Name | Address | Phone | Fax |
| Management Department | Seavans South Building 10F, 1-2-3 Shibaura, Minato-ku, Tokyo 105-0023 | +81-3-5419-6206 | +81-3-5419-6265 |
| Planning Department | Seavans South Building 10F, 1-2-3 Shibaura, Minato-ku, Tokyo 105-0023 | +81-3-5419-6206 | +81-3-5419-6265 |
| Name | Address | Phone | Fax |
| Sales Division | Seavans South Building 10F, 1-2-3 Shibaura, Minato-ku, Tokyo 105-0023 | +81-3-5419-6205 | +81-3-5419-6269 |
| Tokyo Branch | Seavans South Building 10F, 1-2-3 Shibaura, Minato-ku, Tokyo 105-0023 | +81-3-5419-6205 | +81-3-5419-6269 |
| Sapporo Office | 1-2-44 Higashinaebo-ichijo, Higashi-ku, Sapporo, Hokkaido 007-0801 | +81-11-784-8183 | +81-11-784-8186 |
| Tohoku Office | Kashima Kogyo Building, 2-2-3 Honcho, Aoba-ku, Sendai, Miyagi 980-0014 | +81-22-262-6235 | +81-22-262-6240 |
| Nagoya Branch | Hirokoji Honmachi Building 5F, 3-1-1 Sakae, Naka-ku, Nagoya-shi, Aichi 460-0008 | +81-52-265-5840 | +81-52-265-5841 |
| Osaka Branch | Umeda Pacific Building 6F, 2-5-10 Sonezaki, Kita-ku, Osaka-shi, Osaka 530-0057 | +81-6-4309-5826 | +81-6-4309-5836 |
| Hiroshima Branch | Hiroshima Kogin Building, 2-1-22 Kamiya-cho, Naka-ku, Hiroshima, Hiroshima 730-0031 | +81-82-244-7234 | +81-82-244-7151 |
| Kyushu Branch | Met Life Tenjin Building, 1-2-12 Tenjin, Chuo-ku, Fukuoka, Fukuoka 810-0001 | +81-92-781-2309 | +81-92-781-0145 |
| Concrete Materials Section | Seavans South Building 10F, 1-2-3 Shibaura, Minato-ku, Tokyo 105-0023 | +81-3-5419-6205 | +81-3-5419-6269 |
| Name | Address | Phone | Fax |
| Quality Assurance Department | Seavans South Building 10F, 1-2-3 Shibaura, Minato-ku, Tokyo 105-0023 | +81-3-5419-6206 | +81-3-5419-6265 |
| Quality Assurance Department (Fuji) | 704-65 Gokanjima Hamazoe, Fuji, Shizuoka 416-0946 | +81-545-61-7311 | +81-545-64-3359 |
| Name | Address | Phone | Fax |
| Production Department | Seavans South Building 10F, 1-2-3 Shibaura, Minato-ku, Tokyo 105-0023 | +81-3-5419-6224 | +81-3-5419-6265 |
| Maintenance Group (Fuji) | 704-65 Gokanjima Hamazoe, Fuji, Shizuoka 416-0946 | +81-545-61-7311 | +81-545-64-3359 |
| Tokyo Self-Leveling Materials Center | 4-11-3 Toyosu, Koto-ku, Tokyo 135-0061 | +81-3-3533-9190 | +81-3-3536-1767 |
| Chiba Waterproof Materials Factory | 8-1 Goi Minami Kaigan, Ichihara, Chiba 290-0045 | +81-436-23-5122 | +81-436-23-5152 |
| Fuji Factory | 704-65 Gokanjima Hamazoe, Fuji, Shizuoka 416-0946 | +81-545-61-7311 | +81-545-64-3359 |
| Osaka Self-Leveling Materials Center | 15-2 Ishizu Nishi Machi, Nishi-ku, Sakai, Osaka 592-8332 | +81-72-241-5130 | +81-72-241-5029 |
| Name | Address | Phone | Fax |
| Development Department | 1-6 Okinoyama, Kogushi, Ube, Yamaguchi 755-0067 | +81-836-22-6151 | +81-836-22-6189 |
