November 1954	Taiyo Electric Industry Co., Ltd. founded as a manufacturer of electric machines and equipment in Nishi-Ohsaki, Shinagawa-ku, Tokyo, capitalized at 5,000,000 yen.
April 1957	Sano Denki K.K. established as a manufacturer of various types of electric machineries in Nishi-Ogu, Arakawa-ku, Tokyo, capitalized at 1,000,000 yen.
September 1957	Taiyo Electric Industry becomes a group company of Nippon Electric Industry Co., Ltd.
January 1959	Taiyo Electric Industry moves all businesses and facilities to Shimura Nakadai-cho, Itabashi-ku, Tokyo.
November 1959	Sano Denki K.K. increases capitalization to 3,000,000 yen.
October 1960	Sano Denki K.K. increases capitalization to 5,000,000 yen.
November 1960	Taiyo Electric Industry increases capitalization to 10,000,000 yen.
September 1961	Sano Denki K.K. increases capitalization to 10,000,000 yen.
April 1964	Taiyo Electric Industry moves all businesses and facilities to Asakusa Kiyokawa-cho, Taito-ku, Tokyo.
October 1967	Taiyo Electric Industry moves all its businesses and facilities to the premises of Mukojima Office of Nippon Electric Industry Co., Ltd. at Tsutsumi-dori, Sumida-ku, Tokyo.
October 1968	Sano Denki K.K. becomes a group company of Nippon Electric Industry Co., Ltd.
July 1970	Taiyo Electric Industry establishes Osaka Branch Office in Osaka.
April 1971	Taiyo Electric Industry establishes Sendai Branch Office.
October 1972	Taiyo Electric Industry and Sano Denki K.K. merge on equal terms, with capitalization of 20,000,000 yen, changing the trade name Taiyo Electric Industry.
December 1973	Capitalization increased to 40,000,000 yen.
March 1978	Ogu Rotary Machinery Plant closes.
May 1979	Hibiya Tsusho Co., Ltd. acquires capital in Taiyo Electric Industry.
June 1983	Capitalization increased to 50,000,000 yen
March 1985	Factory land of 11,985.61 m2 (about 3,626 tsubo) acquired in the Tsukuba Minami First Industrial Estate
July 1986	Construction works for Tsukuba Plant start.
February 1987	Tsukuba Plant completed
April 1987	The head office and plant moves to Tsukuba Plant.
October 1987	Capitalization increased to 102,500,000 yen
January 1989	Tokyo Office opens in Nippori.
October 1996	Head office moves to Tokyo (Nippori).
June 1999	Taiyo Electric Industry becomes a group company of NEC Corporation.
November 1999	Tsukuba Plant obtains ISO 9001 certification.
April 2002	NTT’s order for control panels taken over from Densei-Lambda K.K.
October 2002	Sales Headquarters obtains ISO 9001 certification.
February 2004	Taiyo Electric Industry becomes a group company of Nomura Securities.
November 2006	Head Office obtains ISO 9001 certification. Head Office, Tsukuba Plant and Osaka Branch Office obtain ISO 14001 certification.
February 2007	All the stocks acquired from the parent company, Nomura Principal Finance Co. Ltd, through a Management and Employee Buyout (MEBO); capitalization set at 85,000,000 yen
November 2011	Osaka Office obtains ISO 9001 certification.
2018	Our ISO 9001 and 14001 certification migrated to the 2015 edition.
August 2022	Constructed an office building within the Tsukuba Factory.
January 2023	Constructed an new warehouse within the Tsukuba Factory.