Business Sites
Head Office
| Otemachi HQ | 1-1-2 Otemachi, Chiyoda-ku, Tokyo 100-8162, Japan |
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Research Laboratory
| Central Technical Research Laboratory | 8 Chidoricho, Naka-ku, Yokohama, Kanagawa 231-0815, Japan |
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Refineries & Plants
| Sendai Refinery | 5-1-1 Minato, Miyagino-ku, Sendai, Miyagi, 985-0901, Japan |
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| Kawasaki Refinery | 7-1 Ukishimacho, Kawasaki-ku, Kawasaki, Kanagawa, 210-8523, Japan |
| Negishi Refinery | 1-1 Otoricho, Isogo-ku, Yokohama, Kanagawa, 235-0006, Japan |
| Sakai Refinery | 1 Chikkouhamaderacho, Nishi-ku, Sakai, Osaka, 592-8550, Japan |
| Mizushima Refinery | 2-1 Ushiodori, Kurashiki, Okayama, 712-8588, Japan |
| Marifu Refinery | 6-1-1 Waki, Wakicho, Kuga, Yamaguchi, 740-0061, Japan |
| Oita Refinery | 1-1 Ichinosu, Oita, Oita, 870-0112, Japan |
| Yokohama Plant | 3-390 Koyasudori, Kanagawaku, Yokohama, Kanagawa, 221-0021, Japan |
| Wakayama Plant | 1000 Hatsushimachohama, Arita, Wakayama, 649-0393, Japan |
| Kashima Refinery(KASHIMA OIL CO., LTD) | 4 Towada, Kamisu-shi, Ibaraki 314-0198, Japan |
| Chiba Refinery(Osaka International Refining Company Limited) | 1 Chigusakaigan, Ichihara, Chiba, 299-0108, Japan |
| Yokohama Tsurumi Lube Park | 2-1 Anzencho, Tsurumi-ku, Yokohama, Kanagawa, 230-0035, Japan |
Branch Offices
| Hokkaido Branch Office (Hokkaido) |
5-1 Kita 4 Jonishi, Chuo-ku, Sapporo, Hokkaido, 060-0004, Japan |
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| Tohoku Branch Office (Aomori, Iwate, Miyagi, Akita, Yamagata, Fukushima) |
1-1-20 Kakyoin, Aoba-ku, Sendai, Miyagi, 980-0013, Japan |
| Kanto Branch Office 1 (Ibaraki, Tochigi, Gunma, Nagano, Niigata) |
1-3-1 Uchisaiwaicho, Chiyoda-ku, Tokyo, 100-0011, Japan |
| Kanto Branch Office 2 (Kanagawa, Yamanashi, Shizuoka) |
1-3-1 Uchisaiwaicho, Chiyoda-ku, Tokyo, 100-0011, Japan |
| Tokyo Branch Office (Tokyo, Chiba, Saitama) |
1-3-1 Uchisaiwaicho, Chiyoda-ku, Tokyo, 100-0011, Japan |
| Chubu Branch Office (Aichi, Mie, Gifu, Toyama, Ishikawa, Fukui) |
4-7-1 Meieki, Nakamura-ku, Nagoya, Aichi, 450-6214, Japan |
| Kansai Branch Office (Osaka, Kyoto, Shiga, Nara, Wakayama, Hyogo, Tokushima, Kagawa, Ehime, Kochi) |
3-3-10 Umeda, Kitaku, Osaka, 530-0001, Japan |
| Chugoku Branch Office (Hiroshima, Okayama, Yamaguchi, Shimane, Tottori) |
1-2-19 Matobacho, Minami-ku, Hiroshima, 732-0824, Japan |
| Kyushu Branch Office (Fukuoka, Saga, Nagasaki, Oita, Kumamoto, Miyazaki, Kagoshima) |
12-20 Kamikawabatamachi, Hakata-ku, Fukuoka, 812-0026, japan |
| Okinawa Branch Office (Okinawa) |
4-1 Higashimachi, Naha, Okinawa, 900-0034, Japan |
| Nationwide Branch Office | 1-1-2 Otemachi, Chiyoda-ku, Tokyo 100-8162, Japan |
Business Sites
| Muroran Office | 1-172 Jinyamachi, Muroran, Hokkaido, 050-0067, Japan |
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| Funagawa Office | Ashizawa-162-1, Funagawaminato Funagawa, Oga, Akita, 010-0511, Japan |
| Niigata Office | 2-1-1 Ryugashima, Chuo-ku, Niigata, 950-0072, Japan |
| Hitachi office | 3453 Miyatacho, Hitachi, Ibaraki, 317-0055, Japan |
| Sodegaura Office | 1 Kitasode, Sodegaura, Chiba, 299-0266, Japan |
| kawasaki Office | 12-1 Ogimachi, Kawasaki-ku, Kawasaki, Kanagawa, 210-0867, Japan |
| Chidori Office | 4-2 Chidoricho, Kawasaki-ku, Kawasaki, Kanagawa, 210-0865, Japan |
| Osaka Office | 2-1 Takasago, Takaishi, Osaka, 592-0001, Japan |
| Kudamatsu Office | 1 Higashikaigandori, Kudamatsu, Yamaguchi, 744-0002, Japan |