• Head Office
  Address：15F Hibiya Kokusai Bldg., 2-2-3 Uchisaiwai-cho, Chiyoda-ku, Tokyo 100-0011
  Tel：+81-3-3502-1601

• Shikoku Operations
  Address：4070-2 Tane, Kikuma-cho, Imabari, Ehime Prefecture 799-2393
  Tel：+81-898-54-2500

• Yamaguchi Operations
  Address：13-3 Nishioki, Nishiokinoyama, Ube, Yamaguchi 759-0205
  Tel：+81-836-41-4154
  ※The office is located 1.5 kilometers along the campus road from the main gate (second floor: Taiyo Sekiyu Yamaguchi Operations)

• Higashinihon Branch
  Address：Uchisaiwai-cho Dai Bldg., 1-3-3 Uchisaiwai-cho, Chiyoda-ku, Tokyo 100-0011
  Tel：+81-3-3502-3866

• Nakanihon Branch
  Address：7F Sumitomoseimei Midosuji Bldg., 4-14-3 Nishitenman, Kita-ku, Osaka 530-0047
  Tel：+81-6-6366-1012

　　 Chubu Sales Office
　　　　Address：2F Sumitomoseimei Chigusa No. 2 Bldg., Aoi, Higashi-ku, Nagoya, Aichi
　　　　Prefecture 461-0004
　　　　Tel：+81-52-936-6123

• Chugoku Branch
  Address：6F Kamihacchobori Bldg., 4-27 Kamihacchobori, Naka-ku, Hiroshima
  Tel：+81-82-211-4488

• Kyusyu Branch
  Address：11F Taihaku Bldg., 2-19-24 Hakataekimae, Hakata-ku, Fukuoka, Fukuoka Prefecture 812-0011
  Tel：+81-92-415-1255

• Shikoku Branch
  Address：5F Fujiko Bldg., 1-14-7 Ichiban-cho, Matsuyama, Ehime Prefecture 790-0001
  Tel：+81-89-943-5252

　　 Higashi Shikoku Sales Office
　　　　Address：7F Central Tamachi Bldg., 11-5 Tamachi, Takamatsu, Kagawa
　　　　Prefecture 760-0053
　　　　Tel：+81-87-837-0050