Denyo

Denyo Co., Ltd. is a Japanese manufacturer of engine generators, engine welders, compressors and special equipment such as light towers and aerial work platforms. It was established in 1948 as Nippon Denki Yosetsu Kizai Co., Ltd. in Tokyo and changed its name to Denyo Co., Ltd. in 1966. The company operates manufacturing and sales subsidiaries in Indonesia, Singapore, the United States, the Netherlands and Vietnam, and its shares are listed on the Tokyo Stock Exchange Prime Market.

Denyo Co., Ltd. was established in July 1948 as Nippon Denki Yosetsu Kizai Co., Ltd. in Tokyo Irifunecho (present-day Shintomicho). In March 1959 it developed and began production of Japan's first high-speed engine welder. In December 1961 the Saitama Plant was completed and production of engine generators began. In February 1966 it adopted noise-prevention devices for engine generators and engine welders, and in July 1966 the company changed its name to Denyo Co., Ltd. In July 1970 the Shiga Plant was completed and began production. In April 1973 production of engine compressors began. In March 1976 a joint venture, P.T. Denyo Indonesia (now P.T. Dein Prima Generator), was established in Indonesia, and in April 1976 the Fukui Plant was completed and began operation. In May 1981 a joint venture with local capital, United Machinery Services Pte. Ltd. (now Denyo United Machinery Pte. Ltd.), was established in Singapore. In January 1982 the new Saitama Plant was completed and relocation finished. In February 1983 the company listed on the Second Section of the Tokyo Stock Exchange. In May 1984 it entered the water-related equipment field, developing and producing engine high-pressure water pumps and drain pipe cleaning devices. In April 1988 it entered new businesses, developing and selling cogeneration systems and uninterruptible power supplies, and acquired shares of D.B.S. Co., Ltd. (now Denyo Kosan Co., Ltd.). In October 1991 it entered the aerial work platform field and began sales. In December 1992 it established Denyo America Corporation in the United States. In June 1995 it announced the GAW series of gasoline engine welders using permanent magnets. In August 1995 it established Denyo Manufacturing Corporation as a joint venture in the United States. In October 1997 it launched the DIS series of engine compressors. In December 1997 the Fukui Plant obtained ISO9001. In March 2000 it listed on the First Section of the Tokyo Stock Exchange, and in June 2000 it established Denyo Asia Pte. Ltd. in Singapore. In May 2003 the Shiga Plant was closed and production integrated into the Fukui Plant; the Shiga Plant became the Shiga Logistics Center and Fukui Branch Plant. In October 2006 the Fukui Plant obtained ISO14001, and in December 2006 the head office was relocated to Nihonbashi Horidomecho, Chuo-ku. In June 2007 Nishinihon Hatsudenki Co., Ltd. (now Nishihatsu Co., Ltd.) became a subsidiary through share acquisition, and in October 2007 Denyo Europe B.V. was established in the Netherlands. In July 2009 Denyo Techno Service and Denyo Trading were merged into the company. In May 2010 Denyo Vietnam Co., Ltd. was established in Vietnam. In March 2013 a development and training center was newly established in Sakado, Saitama Prefecture. In February 2015 Denyo Vietnam Co., Ltd. expanded its second plant and began production of engine generators. In February 2020 Denyo Trading Vietnam Co., Ltd. was established in Vietnam. In April 2022 the company moved to the Tokyo Stock Exchange Prime Market. In March 2023 a Service Center Kanto was newly established in Sakura, Chiba Prefecture. In January 2025 the new head office plant of Nishihatsu Co., Ltd. was completed and began operation. In April 2025 a Service Center West Japan was newly established in Okayama, Okayama Prefecture.

Product categories. Engine generators · Engine welders · Compressors · Light towers · Aerial work platforms · Turning rolls · Load testing equipment

1. 1トップページ - デンヨー株式会社denyo.co.jp
2. 2デンヨーの歩み - デンヨー株式会社denyo.co.jp
3. 3会社情報 - デンヨー株式会社denyo.co.jp
4. 4製品情報 - デンヨー株式会社denyo.co.jp
5. 5Denyowikidata.org