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| Headquarters | 3-3-3, Toyosu, Koto-ku, Tokyo, 135-6007, Japan | |
| Corporate Planning & Administration Department |
Tel: +81-3-5560-1255 | Fax: +81-3-5560-1994 |
| Personnel & General Affairs Department | Tel: +81-3-5560-1311 | Fax: +81-3-5560-1991 |
| Coke & Coal Department | Tel: +81-3-5560-1906 | Fax: +81-3-5560-2909 |
| Recycling Department | Tel: +81-3-5560-2905 | Fax: +81-3-5560-2911 |
| Chemical Machinery Department | Tel: +81-3-5560-2906 | Fax: +81-3-5560-2913 |
| Kitakyushu Coking Works | 1-3 Hibiki-machi, Wakamatsu-ku, Kitakyushu City Postcode : 808-8567 Tel: +81-93-751-9230 Fax: +81-93-751-7979 |
| Tochigi Engineering Factory | 1 Ko-machi, Tochigi City Postcode : 328-8503 Tel: +81-282-28-1111 Fax: +81-282-28-1134 |
| Kyushu Regional Office | 1-2-1 Kohama-machi, Omuta City, Fukuoka Postcode : 836-0034 Tel: +81-944-57-3111 Fax: +81-944-52-4002 |
| Miike Recycling Center | 1 Shinko-machi, Omuta City, Fukuoka Postcode : 836-0061 Tel: +81-944-57-3136 Fax: +81-944-57-3113 |
| West Japan Sales Group | 1-3-15 Awaza, Nishi-ku, Osaka Postcode : 550-0011 Tel: +81-6-6531-3873 Fax: +81-6-6531-3857 |
| Kyushu Sales Group | 1-2-1 Kohama-machi, Omuta City, Fukuoka Postcode : 836-00034 Tel: +81-944-41-8870 Fax: +81-944-41-5200 |
| Beijing Office | #1018A 10F Beijing Development Building 5 Dong Sanhuan Bei Lu, Chaoyang District, Beijing, China Tel: +86-10-6590-8510 Fax: +86-10-6590-8512 |
| Shanghai Office | RM06, 38F PARK PLACE, 1601 Nanjing West Road, Shanghai, China Tel: +86-21-6171-3708 Fax: +86-21-6171-3709 |