Bihoku Funka Kogyo Co., Ltd.

Aerial Shoot


  • We are the leading suppliers of Calcium carbonate in the fields of food additives and pharmaceuticals.
  • We own Karabitsu mine, which produces the best quality crystalline limestone in the world. With 100 million tons in reserve, there is enough limestone to last for 500 years.
  • We are the only manufacturer of Calcium carbonate for pharmaceuticals in Japan.

Most Competitive Products


1942 Established in Okayama prefecture, Japan.
Niimi Plant (No.1) completed.
Yogai mine developed.
1965 Niimi Plant (No.2) completed.
1995 Karabitsu mine developed.
2002 Head office, Niimi Plant, Karabitsu mine and Osaka office ISO 9001:2000 certified.
2003 Fukushima Plant and Otakine mine ISO 9001:2000 certified.
2004 Head office, Niimi Plant, Tetta Plant, Osaka office and Karabitsu mine ISO 14001:2004 certified.
2005 Tetta Plant ISO 9001:2000 certified.
2016 Fukushima Plant and Otakine mine ISO 14001:2004 certified.
Tetta Plant halal certified.

Company Overview (as of March 1, 2021)

Company name Bihoku Funka Kogyo Co., Ltd.
Head office 704, Nishigata, Niimi City, Okayama, 718-0017, Japan
Date of establishment January 1, 1942
Capital JPY 35 million
Number of employees 156
Location Head office: Okayama
Branch office: Osaka
Plants: Fukushima, Okayama


Plant location map

Niimi Plant

  • The Niimi plant, which is our primary plant and is located near Karabitsu mine in Okayama prefecture, started operations when our company was established.

    ISO 9001
    ISO 14001

    Calcium carbonate (Industrial grade)

Fukushima Plant

  • The Fukushima plant is located in Tamura city, Fukushima prefecture. It mainly manufactures industrial grade Calcium carbonate for eastern Japan.

    ISO 9001
    ISO 14001

    Calcium carbonate (Industrial grade)

Tetta Plant

  • The Tetta plant is adjacent to the Karabitsu mine. The Niimi plant manufactures Calcium carbonate for food additives and pharmaceuticals in a completely clean room that eliminates extremely fine dust and dirt.

    ISO 9001
    ISO 14001
    Pharmaceutical manufacturing license
    GMP (Good Manufacturing Practice)
    FSSC 22000

    Calcium carbonate (Pharmaceutical grade and food grade)

Karabitsu mine

  • The Karabitsu mine produces some of Japan's finest crystalline limestone and has an estimated reserve of 100 million tons. High-purity, high-whiteness products are backed by this excellent raw material.

    ISO 9001
    ISO 14001

    Calcium carbonate (Industrial grade)

Otakine Mine

  • The Otakine mine produces high-grade, high-white limestone with high crystallinity and few impurities.

    ISO 9001
    ISO 14001

    Calcium carbonate (Industrial grade)