History
   
1923
February
Kiichi Ota started business
1948
March
For business expansion, the conventional private operation was changed to "OTA CHUZOSHO", Private Limited Company.
1964
July
Technical cooperation with Hitachi Zosen Corporation in T-process started
1965
June
Technical cooperation with Yuka Badicshe Co., Ltd. in Full Mold Casting started
1967
June
Newly established Machine Tool Department
1969
October
Technical cooperation in the area of Fluid Sand Process developed in Soviet Russia started
1970
April
According to the government structural improvement project, the ON Group (5 companies took part in) was formed. As one of the core companies, it formulated five-year equipment modernization project
1970
December
Increased the capital to 10,000,000yen,and the company name was changed to OTA CHUZOSHO Co.,Ltd.
1973
February
Yoshiaki Ota acceded to president
1975
January
Obtained the plant site in Chiyoda-cho, Yamagata-gun, Hiroshima Prefecture and completed its improvement
1980
July
Newly established a foundry in Chiyoda-cho
1986
February
Newly established a machine tool workshop in Chiyoda-cho
1989
September
Additionally established a foundry
1990
September
Newly established Engineering Department
1990
December
Additionally established a foundry
1994
August
Newly established a wooden mold plant
1994
December
Newly established a shot-blasting shop
1995
January
Yoshio Ota acceded to president
1995
April
Established an electric furnace
1997
March
Additionally established a machine tool workshop
2002
January
Newly established O-Cast Project Department   Started to sell portable bio-toilets
2002
October
Additionally established a foundry
2002
October
Brought in trainees from Indonesia
2002
December
Expanded the commercial land in Chiyoda-cho, Yamagata-gun
2003
January
Started to sell bio-toilets "Sarara"
2003
February
The 80th anniversary of business
2004
February
Spun off Engineering Department and established Japan Engineering Works, Private Limited Company
Newly established Kitakyushu branch
2004
April
Established O-Cast Thai Co., Ltd. Newly established a machining workshop in Thailand
2004
October
Started to sell bio-toilets "Sarara Woody"
2005
March
Chiyoda-cho was changed to Kitahiroshima-cho according to merging of municipalities
2005
December
Newly established an office and a building for welfare
2006
September
Japan Engineering Works, Private Limited Company was changed to Japan Engineering Works Co., Ltd.

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Head Office  3-23, Kamitenma-cho, Nishi-ku, Hiroshima,733-0021 Japan
TEL +81-82-232-8271(main switchboard) FAX +81-82-293-0070
Chiyoda Business Office 157-1, Maitsuna, Kitahiroshima-cho, Yamagata-gun, Hiroshima, 731-1505 Japan
TEL +81-826-72-5151(main switchboard) FAX +81-826-72-5155