1910
Founded as Nissin Kogyosha by Nobu Tomizawa.

Nobu Tomizawa, the founder

Distribution board supplied to substation in Kyoto
1917
Incorporated as Nissin Electric Co., Ltd.
1937
Began cooperation with Sumitomo Electric Industries, Ltd.

Kyoto works at Umezu in 1938
1945
Took over the power capacitor production business of Sumitomo Electric Industries, Ltd.

Oil filled power capacitors in 1945
1963
Built the Maebashi works.

Maebashi works in 1963
1968
Built new works at Kuze and Kujo.
1970
Started business of charged particle accelerators, and established Nissin High Voltage.
(2003, NHV Corporation, took over the business of Nissin High Voltage.)
1980
Established Nissin Denki Shouji Co., Ltd. for the sale of electrical equipment and machinery.
1984
Established Nissin Systems Co., Ltd. for the design and sales of computer software.
1987
Established Nissin Electric (Thailand) Co., Ltd.

Can type power capacitors manufactured in Thailand

Winding work in Thailand
1991
Established Nissin Allis Electric Co., Ltd. in Taiwan.

Medium voltage gas insulated switchgear in Taiwan
1995
Established Wuxi Nissin Electric Co., Ltd. in China.
(2004, merged with Nissin Electric Wuxi Power Capacitor Co., Ltd., and changed the name to Nissin Electric (Wuxi) Co., Ltd.)

1999
Established Nissin Ion Equipment Co., Ltd. within Kuze works for the manufacture, installation, and servicing of ion implanter.

Ion implanter
2001
Established Nissin Electric Wuxi Power Capacitor Co., Ltd. in China. (2004, Changed the name to Nissin Electric (Wuxi) Co., Ltd.)

Tank type capacitor manufactured in Wuxi
Established Beijing Beikai Nissin Electric HV Switchgear Equipment Co., Ltd. in China.
(2006, Changed the name to Beijing Hongda Nissin Electric Co., Ltd.)

Groundbreaking ceremony at Beijing
2002
Established Nissin Electric Wuxi Co., Ltd. in China.

Shipping first-made gas insulated voltage transformer at Wuxi
2005
Nippon ITF Inc., an affiliated company conducting fine coating services, became a subsidiary of Nissin.

Fine coating service
Established Nissin Ion Equipment Co., Ltd., Shiga Plant/Plasma Technology R&D Center.
2007
Established Nissin Advanced Coating Indo Co., Ltd.
(2015, Changed the name to Nissin Advanced Coating Indo Co., Private Ltd.)
Became a consolidated subsidiary of Sumitomo Electric Industries, Ltd.
2010
Established Nissin Ion Equipment USA, Inc.
2011
Established Nissin Ion Hightech (Yangzhou) Co., Ltd. in China.
Established NHV Accelerator Technologies Shanghai in China.

2015
Established Nissin Heartful Friend Co., Ltd. in oeder to promote the employment of people with disabilities.
2017
Established the Nissin Electric Group Foundation for Social Contribution.
(2018, Became a public interest incorporated foundation.)
100th anniversary of Nissin Electric Co., Ltd.
2019
Opened the Nissin Academy Training Center.

Established Nissin Electric Myanmar Co., Ltd. in Myanmar.
2023
Delisted from the Prime Market of the Tokyo Stock Exchange, Inc.
Became a wholly owned subsidiary of Sumitomo Electric Industries, Ltd.