• Head Office

  • 20-5, Shitaya 2-chome. Taito-ku, Tokyo 110-0004 MAP
  • Phone: +81-3-3876-3135
    Fax: +81-3-3876-3278

• Osaka Branch Office

  • Osaka Nissei Building 5F 1-26, Kitahamahigashi, Chuo-ku, Osaka 540-0031 MAP
  • Phone: +81-6-6910-2020
    Fax: +81-6-6910-2021

• Nagoya Branch Office

  • 16-13. Shinsakae 2-chome, Naka-ku. Nagoya 460-0007 MAP
  • Phone: +81-52-261-0731
    Fax: +81-52-242-1317

• Kyushu Office

  • Kokurakosan KMM Nishi-kan 7F, 8-4, Asano 2-chome, Kokurakita-ku, Kitakyushu. Fukuoka 802-0001 MAP
  • Phone: +81-93-482-3945
    Fax: +81-93-482-3946

• Hanoi Representative Office

  • 12F Lot A2B, Cau Giay Industrial, Dich Vong Hau Ward, Cau Giay District, Hanoi,Vietnam
  • Phone: +84-24-3795-7936
    Fax: +84-24-3795-5365

• Building Materials Division

  • 1-24. Aoyagi 1-chome, Soka. Saitama 340-0002 MAP
  • Phone: +81-48-931-0252
    Fax: +81-48-931-5303

Production and Technical Service Bases

• Saitama Plant、R&D Center

  • 28-13, Nakane 1-chome, Soka, Saitama 340-0005 MAP
  • Phone: +81-48-931-4291
    Fax: +81-48-931-4299

• Otone Plant

  • 567-1, Toyonodai 2-chome,Kazo, Saitama 349-1148 MAP
  • Phone: +81-480-72-7171
    Fax: +81-480-72-7170

• Fukushima Plant No.1

  • 31-61. Aza lwasawa, Oaza Shimokitaba. Hironomachi, Futabagun, Fukushima 979-0402 MAP
  • Phone: +81-240-27-3347
    Fax: +81-240-27-2273

• Fukushima Plant No.2

  • 1-1. Aza Nakamaru, Oaza Yamadaoka. Narahamachi, Futabagun, Fukushima 979-0513 MAP

• Aoyagi Plant

  • 1-24. Aoyagi 1-chome, Soka. Saitama 340-0002 MAP
  • Phone: +81-48-931-5575
    Fax: +81-48-936-4625

• Subsidiary
  SIAM NKS CO., LTD.

  • 123 M.4 Nakhon Luang Industrial Estate, T. Bangprakru, A. Nakornluang, Ayutthaya 13260, Thailand MAP
  • Phone: +66-35-364028～9
    Fax: +66-35-364030