The story
1973 - Noboru Yamada left JVC to start his own business.
1983 - Yamada Denki Co., Ltd. founded.
1989 - Listed on JASDAQ.
1996 - Started business as internet service provider.
September 2000 - Promoted to the first section of the Tokyo Stock Exchange.
2002 - Acquired Daikuma from Ito Yokado as a subsidiary.
2004 - Opened Tecc Land Gushikawa store in Gushikawa (now Uruma), Okinawa.
2004 - Yamada Denki's first city-based store, the main Hiroshima store, opened.
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2004 - Invests in Kouziro Co., Ltd., owner of Shopland PC.
February 25, 2005 - Became the first Japanese specialist store or consumer electronics store to record consolidated sales in excess of 1 trillion yen.
July 29, 2005 - With the opening of the Tecc Land Tokushima Aizumi branch, succeeded in opening a store in every prefecture in Japan.
March 10, 2006 - Opened the first city store adjacent to a terminus, LABI1 Namba, 700m south of Namba Station in Naniwa-ku, Osaka.
November 21, 2006 - Entered a business alliance (and capital alliance) with a Kyūshū-based consumer electronics retailer, Shōichi Denki (株式会社正一電気). The companies plan to found a joint venture, Kyūshū Tecc Land, by February 2007.
2007–present - Opened a city store in front of the east exit of Takasaki Station in Takasaki, Gunma, and moved the company headquarters, currently in Maebashi, to the new Takasaki store.
2020 - Opened new stores in Tokyo and Osaka selling both home electrical appliances and high-end furniture from Otsuka Kagu Ltd.
2021-Will release new Kotsau products in stores nationwide
From Wikipedia’s article on Yamada Denki, shared under CC BY-SA 4.0.5