Japan Electrical Construction Industry Co., Ltd.

Opening of the Kanmon Railway Tunnel

Establishment of Railway Electrical Industry Co., Ltd. in Sumida-machi, Kanda-ku

Railway Electric Industry Co., Ltd. established in Sumida-machi, Kanda-ku

Establishment of Company Regulations

Company bylaws established

Relocation of Headquarters to Higashi-Kanda-machi, Kanda-ku

Head office relocated to Higashi-Kanda-machi, Kanda-ku

Issuance of Electrical Construction Industry Guidelines

End of the Pacific War

Headquarters destroyed by fire - Temporary office established in Kanda Surugadai

Head office destroyed by war flames

Established a temporary office at Kanda Surugadai

Relocation of Headquarters to Dōhō-machi, Shimotani-ku

Relocated the head office to Dōtōmachi, Shimotsuke-ku

Enactment of the Constitution of Japan

Electrification of the Joetsu Line (Ishida to Nagaoka)

Invention of the Transistor

Restoration Works at Tokyo Station

Public Railway Act promulgated - Railways become a key industry

Ohu Main Line (Fukushima to Yonezawa) electrification

Set exchange rate of 1 dollar to 360 yen

Tokaido Main Line (Numazu to Hamamatsu) electrification

Construction Industry Act promulgated

Establishment of Japan National Railways (JNR)

Renamed to Nippon Electric Construction Co., Ltd.

Changed company name to Nihon Densetsu Kōgyō Co., Ltd.

Registered as Minister of Construction under Construction Industry Act

Registered with the Construction Minister under the Construction Industry Act

Head office moved to Ueno Motokuromoncho, Taito Ward

Relocated the head office to Ueno Motokurokōmachi, Taitō-ku

Electricity reorganization completed; nine power companies established

Japan National Railways Shinano Power Plant Phase 3 Construction - (Ojiya Power Plant Units 1 & 2 Operation Start)

Takasaki Line (Takasaki to Omiya) electrification

Reconstruction of Kyoto Station

Japan Telecommunications Corporation established

Adoption of corporate philosophy and charter

Established corporate motto and principles

Electrification of Yamanote Freight Line completed

Japan Highway Public Corporation established

Full electrification of Tokaido Main Line completed

NHK Color TV - Tokyo Experimental Station launched

Kanmon National Highway Tunnel opened

Tohoku Main Line (Ueno to Utsunomiya) electrification

Tokaido Main Line (Tokyo to Kobe) - Kodama service commenced

Completion of Tokyo Tower

Completion of Kurobe Tunnel

Electrical Contractor Qualification Examination - Rule Establishment

Opening of the National Museum of Western Art (World Cultural Heritage)

Electrification of the Nikko Line

Implementation of Dollar Exchange Liberalization

NHK and Commercial Broadcasters - Start of Color Television Broadcast

Enactment of the Electrical Contractor Act

Temporary Opening of the Osaka Loop Line

Awarded as a Good Company at the Tokyo Metropolitan Construction Association

Awarded as an excellent company at the Tokyo Metropolitan Construction Association

Completion ceremony of the head office annex (now the head office building)

Relocated the head office to its current location, Ikebukuro, Taitō-ku

Changed fiscal year-end from May to March

Established the Technology Development Headquarters

Both order value and completion value for the 48th period exceeded 100 billion yen for the first time

50th anniversary celebration ceremony

【50th Anniversary Commemoration Project】 Opening of 'Central Academy'

Introduced consolidated financial statements

Promoted the creation of a safety culture

Established the Railway Headquarters and Sales Headquarters

Acquisition of NDK First Ikuno End Building

ISO 9001 Certification Obtained

Acquired the NDK First Ikebukuro Building

Obtained ISO 9001 certification

Establishment of Information and Communications Headquarters

Opening of the Electrical Engineering Technical Academy

Established the Electrical Engineering Technical Academy, certified by the Tokyo Metropolitan Government as a vocational training program

Establishment of Related Business Headquarters

Acquisition of NDK Third Ikuno End Building

Established the Related Business Headquarters

Acquisition of NDK Third Ikeno End Building

Change of Stock Ticker Symbol

Change of stock ticker abbreviation from 'Densetkou' to 'Nippon Denset'

Establishment of NDK Safety Rules

Establishment of West Japan Headquarters

Establishment of NDK Safety Rules

Establishment of Western Japan Headquarters

Opening of NDK Safety Rules Exhibition Room

Corporate Color Change

Opening of NDK Safety Rules Exhibition Room

Corporate Color Change

Formulation of Environmental Policy

Establishment of Registered Electrical Construction Core Skill Certification System

Formulation of Environmental Policy

Establishment of Registered Electrical Work Core Skill Certification System

Received a certificate of appreciation from the Governor of Tokyo as a certified vocational training office

Received a certificate of appreciation from the Governor of Tokyo as a certified vocational training office

Opening of NDK Digital Academy

Opening of NDK Digital Academy

Received the Minister of Health, Labour and Welfare award for occupational skill development

Received the Minister of Health, Labour and Welfare award for occupational skill development

As part of the 70th anniversary celebration, renamed Electrical Construction Technical Academy to NDK Technical Academy

As part of the 70th anniversary celebration, renamed 'Densetkou Technical Academy' to 'NDK Technical Academy'

Second Education Building and High-Altitude Experience at Central Academy

Expansion of Practical Training Facilities and Lines

Completion of Tokyo Skytree

Completion of Preservation and Restoration of Marunouchi Building at Tokyo Station

Transit IC Card

Launch of Nationwide Interoperability Service

Resumption of Full Operation of Sanriku Railway

Sanpo Solar Power – JFE Solar

Completion of Power Shimizu Co., Ltd.

Opening of Hokuriku Shinkansen (Nagano to Kanazawa)

Hokuriku Shinkansen 'Kagayaki'

Commencement of Operations

Transition to a Company with Audit Committee

Opening of Hokkaido Shinkansen (Shin-Aomori to Shin-Hakodate-Hokuto)

New year issue renamed to Reiwa

NDK Safety Culture Creation Hall opened at Chuo Academy

Hotel Koyuen Haruka at Dogo Onsen completed (ZEB project)

Saitama Railway and JR direct line opened

COVID-19 outbreak

Takanawa Gateway Station opened

Tokyo Summer Olympics 2020

Summer Paralympics 2020 held

Transitioned to Tokyo Stock Exchange Prime Market

Kyushu Shinkansen (Miyazaki Onsen to Nagasaki) opened

150th anniversary ceremony of railway opening

Saitama Railway and Tokyu direct line opened

Utsunomiya and Haga LRT (Light Line) opened

Hokuriku Shinkansen (Kanazawa to Tsuruga) opened

Third accommodation building constructed at Chuo Academy

Osaka Healthcare Pavilion at Osaka Expo completed