Corporate history

• Jul. 1965

  Founded Crown Diamond Tool Research Institute in Chigasaki city, Kanagawa prefecture.

• Nov. 1966

  Established Sankyo Diamond Industrial Co., Ltd. with capital of 12.5 million Yen.

• Nov. 1967

  Relocated factory to Nakasinden, Ebina city.

• Feb. 1977

  Independented domestic sales devision as Sankyo Diamond Shoji.

• Jul. 1980

  Established research institute for new product development.

  Sep. 1980

  Began operation of Ibaraki factory.

• Sep. 1981

  Capital increased to 33.97 million Yen.

• Jan. 1982
   

  Launched Super Dry "SD Cutter".
  Established DTR Co., Ltd. for R&D business.

  Aug. 1982

  Began operation of Nabari factory.

• Mar. 1985

  Established Sankyo Diamond Trading Co., Ltd. for export business.

  May 1985

  Relocated head office and factory to Hongo, Ebina city for business expansion.

• Feb. 1986

  SD Cutter won 11th Invention award(Design achievement award).

  Apr. 1986

  SD Cutter won 6th Science and Technology Director award.
  (Science and Technology Agency Promotion Achievement Award)

• Aug. 1990

  Joined Toho Titanium group.

  Nov. 1990

  Merged with Sankyo Diamond Trading and DTR. Capital 35.76 million Yen.

• Jun. 1994

  Established Sankyo Diamond Industrial Europe B.V. in Netherland.

• Apr. 1998

  Merged with Sankyo Diamond Shoji. Capital 37.96 million Yen.

• Jan. 1999

  Launched F seires "SD Protect".

  Jun. 1999

  Capital increased to 94.92 million Yen.

• Dec. 2002

  Certified ISO 9001.

• Mar. 2003

  Closed down Ibaraki factory.

• Apr. 2005

  Joined Hitachi Koki group.

• Sep. 2006

  Certified ISO 14001.

• Nov. 2007

  Integrated blade production devision to Nabari factory.

• Dec. 2009

  Renewal examination and registration of ISO 14001:2008.

• May 2015

  Launched SD Cutter S Protect.