1950-1970

Oct. 1950

Founded as Yamaguchi Iron Works in Doiharamachi, Komatsu City.

Jul. 1957

Renamed Kyowa Kogyosyo.

Dec. 1959

Established a limited company with a capital of 5 million yen.

Dec. 1961

Reorganized as KYOWAKOGYOSYO CO.,LTD. and the employee shareholding system was introduced.

Nov. 1962

Completed a plant for integrated bolt production.

Jan. 1963

Designated as a rationalization model plant for small- and medium-sized enterprises (SME).

Jun. 1965

Abolished the sheet metal processing section and focused the business range on screw manufacturing.

Feb. 1966

Focused on bolt manufacturing.

Dec. 1968

Moved the head office and plant to the present site.

Mar. 1969

Registered as a JIS qualified plant.

1971-1990

Nov. 1971

Introduced large-scale bolt former No. 1.

Jul. 1972

Received large orders for track shoe bolts from Komatsu Ltd.

Mar. 1975

Developed flat-head square neck bolts by means of cold forging and succeeded in remarkable rationalization of production process.

Dec. 1976

Introduced TQC (Total Quality Control).

Feb. 1978

Awarded “Komatsu Quality Control Prize” by Komatsu Ltd.

Oct. 1980

Awarded the Deming Application Prize for Small Companies.

Mar. 1981

Completed Plant No. 2.

Mar. 1984

Awarded the Minister of International Trade and Industry Prize as an SME rationalized model plant.

Oct. 1988

Completed Plant No. 3.

Nov. 1989

Awarded the Pressure-free and Creativity Special Prize (Director-general Prize of the Ishikawa Prefecture Labor Standards Management Bureau).

Feb. 1990

Established a society of employee shareholders.

1991 - 2010 ▼

Aug. 1991

Installed Japan’s largest parts former.

Jan. 1992

Awarded MSE Institute Prize.

Aug. 1993

Completed the head office and Plant No. 4.

Mar. 1996

Registered over-the-counter traded securities with Japan Securities Dealers Association.

Feb. 1997

Introduced total production management (TPM) system and established TPM headquarters.

Mar. 1998

Received NVLAP (National Voluntary Laboratory Accreditation Program) by the USA National Institute of Standards and Technology (for federal quality assurance).

Nov. 1999

Received ISO 9001 certification.

Oct. 2001

Awarded TPM Excellence Prize (Category 2).

Oct. 2002

Received ISO 14001 certification.

Nov. 2003

Completed Plant No. 5 for vehicle parts and introduced a 630-ton press.

Aug. 2004

Completed the Seinan plant, to which the hot-forging section was moved.

Dec. 2004

Listed on the JASDAQ Securities Exchange.

Dec. 2007

Completed Plant No. 6, to which the vehicle-related parts machining section was moved.

Oct. 2008

Completed Plant No. 7, and consolidated the large-diameter cold forging section there.

Feb. 2009

Completed Plant No. 8, and consolidated the small-diameter cold forging section there.

Apr. 2010

Listed on the Osaka Securities Exchange JASDAQ market.

Oct. 2010

Established Kyowa Machinery (Shandong) Co., Ltd. in China.

2011-

Apr. 2012

Completed the plant of Kyowa Machinery (Shandong) Co., Ltd. and started full operation.

Jul. 2013

Listed on the Tokyo Securities Exchange JASDAQ market.

Oct. 2013

Purchased 99 acres of land adjoining the main plant.

Dec. 2013

Introduced a carburizing furnace.

Aug. 2015

Completed Plant No. 9, to which the Seinan plant hot-forging section was moved.

May. 2017

JIS B 1180 hexagon head bolt certification obtained.

Aug. 2021

KYOWA WORK STYLE CO., LTD. is established.