In August 1939, the Japan Contact Research Institute was established to manufacture high-performance electrical contacts for aircraft.

In March 1944, Ohizumi Aviation Machinery Manufacturing Co., Ltd. was established in Itabashi Ward, Tokyo, to manufacture and sell electrical contacts for aircraft.

In October 1945, the company name was changed to “Ohizumi Manufacturing Co., Ltd.,” and the head office was relocated to Nerima Ward, Tokyo.

January 1955: Commencement of NTC (Negative Temperature Coefficient) Thermistor Production.

In December 1966, a subsidiary named “Towada Electronics Co., Ltd.” (now Towada Plant) was established in Towada City, Aomori Prefecture.

In October 1981, “Gonohe Electronics Industry Co., Ltd.” (present-day Sensor Industry Gonohe Plant) was established in Gonohe Town, Sannohe District, Aomori Prefecture.

In January 1984, a subsidiary named “Hakkoda Electronics Co., Ltd.” was established in Towada City, Aomori Prefecture.

In May 1985, a subsidiary named “Sensor Industry Co., Ltd.” (now Sensor Industry First Plant) was established in Towada City, Aomori Prefecture.

In April 1987, production of PTC (Positive Temperature Coefficient) thermistors commenced.

In June 1989, Hachinohe Electronics Industry Co., Ltd. (now the Hachinohe Plant of Sensor Industry Co., Ltd.) was established in Hachinohe City, Aomori Prefecture.

In November 1996, the Tokyo Sales Office was established in Takadanobaba, Shinjuku Ward, Tokyo. In June 2022, it relocated to its current address in Uchikanda, Chiyoda Ward, Tokyo.

In August 2003, the head office relocated to Sayama City, Saitama Prefecture.

In January 2004, a subsidiary named “Dongguan Ohizumi Sensor Co., Ltd.” was established in the Bochong Management Area, Humen Town, Dongguan City, Guangdong Province, China.

In January 2006, it was relocated to its current address in Liaobu Town, Dongguan.

In June 2012, the company listed on the Tokyo Stock Exchange's Mothers market.

In November 2013, the Kariya Sales Office was established in Kariya City, Aichi Prefecture.

In May 2014, the Kyoto Office was established in Shimogyo Ward, Kyoto City, Kyoto Prefecture.

In December 2014, the factory of OHIZUMI MFG (THAILAND) CO., LTD., a subsidiary in Chonburi Province, Thailand, commenced operations.

February, Established the “Shanghai Liaison Office of Dongguan Ohizumi Sensor Co., Ltd.” in Shanghai, China.

April,  Established the “European Representative Office” in Stuttgart, Germany.

May, Established the Technology Development Center within the Towada Factory premises.

In March 2019, the new Towada factory was completed.

September 2021, completion of the Sensor Industry's Fifth Factory Building (Shipping Facility).

In August 2022, it became a consolidated subsidiary of Ferrotec Holdings.

In July 2023, the headquarters relocated to Nihonbashi, Chuo Ward, Tokyo.

February, became a wholly owned subsidiary of Ferrotec Holdings; stock delisted.

July, absorbed and merged Hakkoda Electronics and Sensor Industries into Ohizumi Manufacturing.