History

1925 Nihon Musen Denshin KK (Japan Wireless Telegraph Company) founded as a national policy company
1929 Yosami Radio Transmitting Station begins operations
1950

Denki Kogyo Co., Ltd. established as a second company of the former national policy company

Starts the design, manufacture, construction, and renovation of telecommunications facilities and equipment

1952 Beginning the manufacture of applied high-frequency devices and heat treating services using high frequencies
1959 Beginning of over-the-counter trading on the Tokyo Stock Exchange
1960 Construction of the Kawagoe Plant (present Kawagoe Office), beginning the manufacturing of radio towers and other steel structures
1961 Listing on the Second Section of the Tokyo Stock Exchange
1968 Construction of the Atsugi Plant. Expansion of applied high-frequency equipment manufacturing and heat treating contract work
1972 Construction of the Kanuma Plant. Beginning of antenna manufacturing operations
1990 Listing on the First Section of the Tokyo Stock Exchange
1990 Establishment of DKK Shino- Thai Engineering CO., Ltd., an affiliated company in Thailand specializing in design and construction of communications steel towers
1991 Opening of the Ebino Techno Center. Beginning of maintenance and operating services for Very Low Frequency/high output transmission facilities
1997 Closure of the Yosami Radio Transmitting Station, drawing the curtain on 70 years of history
1999 Ohtakadoya-yama Transmitter: Beginning of maintenance and operating services for Japan Standard Time transmitter
2000 50th anniversary of Denki Kogyo's founding
2001 Hagane-yama Transmitter: Beginning of maintenance and operating services for Japan Standard Time transmitter
2002 Installation of digital television broadcasting antenna on Tokyo Tower (broadcasting commencing in 2003)
2004 Establishment of Denki Kogyo's high-frequency device affiliate in North America, DKK of America, Inc.
2012 Establishment of DKK (THAILAND) Co., Ltd., an affiliated company in Thailand to serve both in the Telecommunication section and the High frequency application section.
Establishment of Denki Kogyo's high-frequency device affiliate in China, Denki Kogyo (Changzhou) Heat Treatment Equipment Co., Ltd.
2013 Establishment of DKK MANUFACTURING (THAILAND) CO., LTD., an affiliated company in Thailand as an overseas manufacturing plant both for the Telecommunication section and the Radio Frequency section.
2016 Acquisition of Zephyr Corporation,a manufacturer of small wind power generator
2017 Establishment of DTHM,S.A.DE C.V.an affiliated company for contract heat treating in the high-frequency division in Mexico
2018 Establishment of KOREA DENKIKOGYO.CO.,LTD. as overseas production and maintenance base in the high-frequency division in Korea

 For more information

Related Information

Telecommunication Division

The activities of the Telecommunication Division.

Radio Frequency Division

The activities of the Radio Frequency Division.

  • About Us
  • Greetings
  • Company Outline
  • History
  • Progress of Denki Kogyo
  • History of the Yosami Radio Transmitting Station
  • At the Establishment of Denki Kogyo
  • The Era of High-Speed Growth
  • A Time of Rapid Transformation
  • The Era of Stable Long-Term Growth
  • The Dawn of the Information Age
  • Toward a New Era Led by the IT Revolution
  • Business Offices
  • Affiliated Companies
  • Corporate Data