President's Message

Under our slogan, “excellent company in the world even small”, we aspire to contribute to society and local communities by guaranteeing quality manufacturing and delivery. At the same time, we are committed to improving safety, environmental protection and production yield by ensuring the workplace to be a “cheerful, friendly, and resilient” one, where each staff can better him/herself as a professional.

Company Profile

  • Name
  • Incorporated on
    1st April 2005
  • Head Office / Factory
    4-4 Ougibuchi, Aza, Ougida, Noshiro-shi, Akita, Japan
  • Capital Amount
    150,000,000 yen
  • Investment Ratio
    51% by Sumitomo Metal Mining Co., Ltd. (SMM) and 49% by Mitsubishi Gas Chemical Company, Inc (MGC)
  • Number of staffs
    89 (as of April 1, 2023)
  • Business Description
    Manufacturing and sale of Faraday rotators(For inquiries, please contact the mail form)
Quality management system ISO 9001 Attestation acquisition(Head Office)
ISO 9001:2015/JIS Q 9001:2015
Environmental management system ISO 14001 Attestation acquisition(Head Office)
ISO 14001:2015/JIS Q 14001:2015

The company name, “Granopt”, is a coined word consisting of Granatum (meaning “many seeds”), which is the origin of “garnet”, and “optical”, meaning “light”.

appearance photograph

Affiliated Company

  • Name
    Granopt Optics Trading (Shenzhen) Co., Ltd.
  • Incorporated on
  • Address
    19B, Block B, Honglong Century Plaza, 3001 Heping Road, Renminqiao,
    Community, Guiyuan Street, Luohu District, Shenzhen 51800 CHINA
  • Investee Company
  • Business Description
    Sale of Faraday rotators