Offices

Head Office

2F Sankaido Building, 1-9-13 Akasaka, Minato-Ku, Tokyo 107-0052 JAPAN map(PDF) 
TEL +81 3 6441 2152
FAX +81 3 6441 2154

OTEC R&D Center / Imari Plant

5-91, Nanatsujima, Shioya, Kurogawacho, Imari, Saga 848-0121 Japan map(PDF)
TEL +81 955 20 7570
FAX +81 955 20 7571
ISO 9001 Registered
ASME(The American Society of Mechanical Engineers) U-Stamp  ※Renewal audit is being suspended.
The Non-governmental Accreditation of Product Certification of Welding
Process Controls for Electrical Facilities