- 1953
- Steel ingot molding and surface plate repair work begins at Sumitomo Metal Industries' Osaka Steel Works.
- 1955
- OSAKA FUJI Corporation is established on April 3. Steel ingot molding and surface plate repair work begins at Sumitomo Metal Industries' Wakayama Steel Works.
- 1960
- Head Office is constructed in Kukuchi-kawata, Amagasaki. Machining, build-up welding, and special welding of rolled steel and other materials begin at the plant.
- 1969
- Omigawa Plant is constructed in Omigawa Industrial Park in Katori, Chiba Prefecture. Machining, build-up welding, and special welding of cans, rolled steel, and rollers begin at the plant.
- 1975
- Metalizing spraying and self-fluxing alloy spraying work begin at Head Office Plant.
- 1976
- Head Office No. 1 Plant is constructed at Jokojinishino-cho in Amagasaki. The facility develops submerged arc hardfacing technology for large-format, high-carbon rolled steel and begins welding work.
- 1977
- A plant for build-up welding of large-format rolled steel, manufacturing of large cans, and welding processing is constructed at Omigawa Plant.
- 1983
- A water plasma spraying system is purchased from Czechoslovakia and installed at Senboku Plant. Ceramic spraying and processing work begins. A jet coat spraying system is purchased and installed.
- 1984
- The company enters the silicon single crystal processing business. OCC continuous casting technology is introduced.
- 1989
- Material Center is formed at 1 Hama, Amagasaki-shi, Hyogo Prefecture, and OCC Division and new building material (metal cardboard) departments are moved to the new facility.
- 1991
- A new corporate identity is introduced featuring the current corporate mark and statement.
- 2001
- Silicon Division begins processing silicon wafer using wire saws.
- 2004
- The company acquires rights to the rolled steel business of Kantoku Technos Co., Ltd. Manufacturing of rolled steel begins at Omigawa Plant. Silicon Division earns ISO 9001 certification.
- 2004
- Construction of Silicon Division Soja Plant is completed.
- 2005
- The company celebrates the 50th anniversary of its founding in April.
- 2006
- Silicon Division (Soja Plant), Senboku Plant, Omigawa Plant (Rolled Steel Department), and Amagasaki Plant (Al-Wave Section) earn ISO 9001:2000 certification.
- 2007
- S.I.TEC CO., LTD., (a manufacturer of electric machinery and electronic parts) joins the OFIC Group.
- 2008
- A precision and vehicle part processing business is launched at Process Division's Amagasaki Plant.
- 2008
- Construction of new Head Office Building is completed in March.
- 2008
- The company makes an investment in Ohara Quartz Co., Ltd., (which manufactures, processes, and sells quartz glass).
- 2009
- Construction of Process Division Wakayama Plant in Saikazaki, Wakayama Prefecture, is completed.
- 2012
- Established Vietnam Office in Ho Chi Minh City, Socialist Republic of Vietnam.
- 2013
- Joint research chair with National University Corporation Osaka University started.
