| 1967 |
Company SE was founded to promote the SEEE construction method, developed in France, in Japan. |
| 1967 |
SE Co., Ltd. was founded to realize reliable social infrastructure in Japan. |
| 1967 |
Introduced the SEEE construction method from the French company S.E.E.E. (now INGÉROP). |
| 1967 |
New Structure Technology Co., Ltd. introduced the SEEE method from the French company S.E.E.E. (now ingérop [AngeloP]) to Japan, started manufacturing and sales as the SEEE business division, and began production at the Atsugi plant. |
| 1967 |
Founded in 1967, SE Co., Ltd. introduced the SEEE construction method to Japan for the first time, sourced from the French company S.E.E.E. (now INGÉROP [Angelope] Co.). |
| 1967-08 |
In August 1967, New Structural Technology Co., Ltd. was established and began manufacturing and sales as the SEEE division. Production started at the Atsugi plant. |
| 1968 |
Introduction of the SEEE method (F-type) technology. |
| 1968 |
Introduced the SEEE method (F-type) technology. |
| 1969 |
Launch of the SEEE Anchor F-type sales. |
| 1969 |
Started sales of the SEEE Anchor F-type. |
| 1971 |
Commencement of sales of bridge collapse prevention devices. |
| 1971 |
Started sales of the bridge collapse prevention device. |
| 1973 |
Initial sales of the Tybble Anchor A-type (F-TA) began. |
| 1973 |
Developed the 'SEEE Ground Anchor' for landslide prevention. |
| 1973 |
Started sales of the initial type of Tybble Anchor A (F-TA). |
| 1973 |
Developed the 'SEEE Ground Anchor' for landslide prevention in 1973. |
| 1977 |
Sales of the F360 cable began. |
| 1977 |
Started sales of the F360-type cable. |
| 1978 |
Sales of the Tybble Anchor B-type (F-TB) began. |
| 1978 |
Started sales of the Tybble Anchor B (F-TB). |
| 1981 |
The SE division of New Structural Technology Co., Ltd., established in August 1967, was spun off and became independent, forming SE Industries Co., Ltd. Offices were opened in Tokyo, Sendai, Nagoya, Osaka, and Kyushu. |
| 1981 |
With the main business purpose of selling and leasing construction equipment required for the SEEE method, New Structure Technology Co., Ltd. (established August 1967) separated and independently established SE Industry Co., Ltd. Simultaneously, it set up the Tokyo office (now Sales Department), Sendai office (now Tohoku Branch), Nagoya office (now Nagoya Branch), Osaka office (now Osaka Branch), and Kyushu office (now Kyushu Branch). |
| 1982 |
Sales of the high-fatigue cable F-PH type (F100–360PH) began. |
| 1982 |
Started sales of the high-fatigue cable F-PH type (F100–360PH). |
| 1983 |
Sales of the Unbond Anchor F-U type began. |
| 1983 |
Started sales of the Unbond Anchor F-U type. |
| 1989 |
Realized Japan's first concrete cable-stayed bridge that is cheaper than steel. |
| 1989 |
In 1989, realized Japan's first concrete cable-stayed bridge that was cheaper than steel. |
| 1990 |
Acquired the product manufacturing division and industrial ownership from New Structural Technology Co., Ltd., and established the Atsugi plant in Atsugi City, Kanagawa Prefecture. |
| 1990 |
Acquired the product manufacturing division and industrial ownership from New Structure Technology Co., Ltd., and established the Atsugi plant in Atsugi City, Kanagawa Prefecture. |
| 1991 |
After acquiring shares of Minori Industrial Co., Ltd., the company changed its name to SE Corporation. |
| 1991 |
Acquisition of shares of Minori Industrial Co., Ltd. : Company name changed to SE Co., Ltd. |
| 1992 |
Acquired the land and buildings of the Atsugi plant from New Structural Technology Co., Ltd. |
| 1992 |
Acquisition of land and buildings of Atsugi plant from New Structural Technology Co., Ltd. |
| 1994 |
Commenced sales of the F500PH type diagonal members for suspension bridges, adopted for the Chichibu Park Bridge. |
| 1994 |
Obtained technical review certification from the Sand Control and Landslide Technology Center Foundation. |
| 1994 |
Established the Yamaguchi plant in Yamaguchi City, Yamaguchi Prefecture, strengthening supply capacity to western Japan and Kyushu markets and initiating in-house production of various components. |
| 1994 |
Acquired shares of Korea SE Co., Ltd. |
| 1994 |
Started sales of the F500PH type diagonal members for cable-stayed bridges (used on Chichibu Park Bridge) : Obtained technical review certification for the SEEE Permanent Ground Anchor Method and Tybble Anchor A type from the Sand Control and Landslide Technology Center Foundation : Established Yamaguchi plant in Yamaguchi City, Yamaguchi Prefecture, strengthening supply capacity to western Japan and Kyushu markets and beginning in-house production of various components : Acquisition of shares of Korea SE Co., Ltd. |
| 1995 |
Moved headquarters to Nishishinjuku 6-chome, Shinjuku-ku, Tokyo, and changed the registered head office location to 1-chome, Nishi-Kanda, Chiyoda-ku, Tokyo. |
| 1995 |
Commenced sales of the new bridge collapse prevention device. |
| 1995 |
Commercialized the 'New Bridge Collapse Prevention Device'. |
| 1995 |
Moved headquarters to 6-3-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo (registered head office moved to 1-3-6 Nishi-Kanda, Chiyoda-ku, Tokyo) : Started sales of the new type bridge collapse prevention device. |
| 1995 |
Commercialized the 'New Fall Bridge Prevention Device' in 1995. |
| 1996 |
Commenced sales of the large-scale diagonal member PAC-H type for suspension bridges (adopted for the San Marino Bridge). |
| 1996 |
Developed and launched the 3D arbitrary shape skeleton structure/design and analysis system 'SCOP' (jointly developed with French SEEE company). |
| 1996 |
Started sales of the PAC-H type large diagonal members for cable-stayed bridges (used on Sunmarin Bridge) : Developed and launched the 3D arbitrary shape skeleton structure / design and analysis total system software 'SCOP' : Co-developed with French SEEE company (now INGEROP). |
| 1997 |
Merged with SE Co., Ltd., the formal surviving company, to change the par value of shares. |
| 1997 |
Merged with SE Co., Ltd. (Chuo-ku, Tokyo), the formal surviving company, to change the nominal value of shares. |
| 1998 |
Commenced sales of the SEEE permanent ground anchor method and Tybble anchor U-type. |
| 1998 |
Obtained ISO 9001 certification. |
| 1998 |
Established a Shikoku branch office in Takamatsu City, Kagawa Prefecture. |
| 1998 |
Started sales of the SEEE Permanent Ground Anchor Method and Tybble Anchor U type : Obtained ISO 9001 certification : Established Shikoku office in Takamatsu City, Kagawa Prefecture : Started sales of Tybble Anchor U type (F-UA). |
| 1999 |
Registered shares on the over-the-counter market with the Japan Securities Dealers Association. |
| 1999 |
Commenced sales of the international standard new anchoring method 'FUT System'. |
| 1999 |
Commenced sales of the 'Saddle System' for extradosed bridges. |
| 1999 |
Registered shares with the Japan Securities Association : Started sales of the international standard new anchoring method 'FUT System' : Started sales of 'Saddle System' for Extra-Dozed bridges. |
| 2000 |
Commenced sales of the new type of fall prevention tie bridge system. |
| 2000 |
Established a China branch (now China sales office) in Hiroshima City, Hiroshima Prefecture. |
| 2000 |
Started sales of the new type fall prevention 'Tay-Bridge System' : Established China branch (now China office) in Hiroshima City, Hiroshima Prefecture. |
| 2001 |
Established Angelo Sec Co., Ltd. (now a consolidated subsidiary). |
| 2001 |
Established AngeloSec Co., Ltd. as a joint venture with the French company INGÉROP. |
| 2001 |
Established Angelo Seck Co., Ltd. (now a consolidated subsidiary). |
| 2001 |
In 2001, established AngeloSec Co., Ltd. as a joint venture with the French company INGÉROP. |
| 2002 |
Obtained construction technology inspection certification for the bridge cable 'FUT-H type diagonal cable'. |
| 2002 |
Commenced sales of the steel counterforce 'KIT Frame' designed to prevent slope collapse. |
| 2002 |
The bridge cable diagonal cable 'FUT-H type diagonal cable' obtained construction technology review certification from the Civil Engineering Research Center (Foundation) : Started sales of the steel counterforce 'KIT Frame' aimed at preventing slope collapse of cut slopes. |
| 2003 |
Moved the registered head office location to 2-2 Kanda Surugadai, Chiyoda-ku, Tokyo. |
| 2003 |
Commenced sales of the SEEE permanent ground anchor method and Tybble anchor M-type. |
| 2003 |
Moved registered head office to 2-9 Kanda Surugadai, Chiyoda-ku, Tokyo : Started sales of the SEEE Permanent Ground Anchor Method and Tybble Anchor M type. |
| 2004 |
Established a Hokkaido branch office in Sapporo City, Hokkaido. |
| 2004 |
Cancelled over-the-counter registration with the Japan Securities Dealers Association and listed shares on the JASDAQ Stock Exchange. |
| 2004 |
Established Hokkaido office in Sapporo City : Cancelled registration of shares with the Japan Securities Association and listed shares on the JASDAQ Securities Exchange. |
| 2005 |
Commenced sales of the 'Universal System', the lower-side connection device for the bridge collapse prevention device. |
| 2005 |
Obtained ISO 14001 certification for the Environmental Management System (Headquarters and Yamaguchi Plant). |
| 2005 |
Developed the AQ Stressing System, a cable tension management system for suspension bridges. |
| 2005 |
Started sales of the 'Universal System' lower structural side connector for bridge collapse prevention device : Obtained ISO 14001 Environmental Management System certification (headquarters and Yamaguchi plant) : Developed the 'AQ Stressing System' tension management system for cable-stayed bridge diagonal cables. |
| 2006 |
Relocated the registered head office to 6-6 Nishishinjuku, Shinjuku-ku, Tokyo. |
| 2006 |
Consolidated subsidiary Angelo Sec Co., Ltd. obtained ISO 9001 certification. |
| 2006 |
Co-developed a site-cast pile construction method using expandable rebar cages with Kajima Construction Co., Ltd. |
| 2006 |
Moved registered head office to 6-3-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo : Consolidated subsidiary Angelo Seck Co., Ltd. obtained ISO 9001 certification : Co-developed with Kajima Construction Co., Ltd. a site-casting pile construction method using a telescoping reinforced concrete core. |
| 2007 |
Expanded the Yamaguchi Plant. |
| 2007 |
Commenced sales of the Permanent Ground Anchor Method and Super Float Tech Anchor. |
| 2007 |
Established Hiko Construction Consultant Ltd. (now a non-consolidated subsidiary). |
| 2007 |
Expanded Yamaguchi plant to strengthen production capacity : Started sales of the 'Permanent Ground Anchor Method and Super Floattech Anchor' : Established Hiyoshi Construction Consultant Ltd. (now a non-consolidated subsidiary). |
| 2008 |
Korea SE Co., Ltd. listed on the Korean KOSDAQ market. |
| 2008 |
Korea SE Co., Ltd. listed on the Korean KOSDAQ market. |
| 2009 |
Established a second warehouse building at the Yamaguchi Plant. |
| 2009 |
Entered the manufacturing and sales business of construction materials (temporary) centered on separators. |
| 2009 |
Acquired shares of Asahi Kogyo Co., Ltd. (now A & K Honshu Co., Ltd.). |
| 2009 |
The Seawall and Embankment Seismic Reinforcement Anchor Method received the 'Evaluation Certificate' from the Coastal Technology Research Center (Japan). |
| 2009 |
Newly built second warehouse building of Yamaguchi plant to improve production efficiency : Entered manufacturing and sales business of construction materials (temporary) centered on separators : Acquired shares of Asahi Kogyo Co., Ltd. (now A & K Honshu Co., Ltd.) : The 'Seawall and Embankment Seismic Reinforcement Anchor Method' obtained evaluation certificate from the Coastal Technology Research Center (Foundation). |
| 2009 |
Since 2009, expanded the business scope through active M&A, and now forms the SE Group comprising SE Co., Ltd. and a total of five other companies. |
| 2010 |
Entered the manufacturing and sales business of construction materials (interior) centered on hanging bolts. |
| 2010 |
Established a China branch (now China Sales Office) in Hiroshima City, Hiroshima Prefecture. |
| 2010 |
Relocated the registered head office to 6-6 Nishishinjuku, Shinjuku-ku, Tokyo. |
| 2010 |
Listed on Osaka Securities Exchange JASDAQ following the merger of the JASDAQ Stock Exchange and Osaka Stock Exchange. |
| 2010 |
Established the Repair & Tech Division to secure full-scale orders for repair and reinforcement works. |
| 2010 |
Commenced sales of the displacement-limiting structure 'SE Limiter'. |
| 2010 |
Entered manufacturing and sales business of construction materials (interior) centered on hanging bolts : Acquired shares of Kyōei Co., Ltd. (now A & K Honshu Co., Ltd.) : Moved registered head office to 6-5-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo : Listed on Osaka Securities Exchange JASDAQ following merger with Osaka Securities Exchange : Established Repair Tech division to secure full orders for repair and reinforcement works : Started sales of displacement limiting structure 'SE Limiter'. |
| 2011 |
Entered PPP (public-private partnership) and concession projects. |
| 2011 |
Launch of the displacement-limiting structure 'CHR Cushion Bar'. |
| 2011 |
Entered PPP (Public-Private Partnership) and concession projects : Started sales of displacement limiting structure 'CHR Cushion Bar'. |
| 2012 |
Kyōei Co., Ltd. and SE Asahi Co., Ltd. (formerly Asahi Kōgyō Co., Ltd.) merged and changed their corporate name to SE A & K Co., Ltd. |
| 2012 |
Entered the bridge, tunnel, and concrete structure repair and reinforcement business. |
| 2012 |
Acquired shares of Nakata Construction Co., Ltd. (now SE Repair Co., Ltd.). |
| 2012 |
Kyōei Co., Ltd. and SE Asahi Co., Ltd. (formerly Asahi Kōgyō Co., Ltd.) merged; changed the company name to SE A & K Co., Ltd. (now A & K Honshū Co., Ltd., manufacturing and selling construction materials, currently a consolidated subsidiary); entered the business of bridge, tunnel, and concrete structure repair and reinforcement; acquired shares of Nakata Construction Co., Ltd. (now SE Repair Co., Ltd.). |
| 2013 |
Increased capital from 1,046 million yen to 1,228 million yen. |
| 2013 |
Implemented the executive officer system. |
| 2013 |
Listed on the Tokyo Stock Exchange JASDAQ (Standard) following the merger of the Tokyo and Osaka Stock Exchanges. |
| 2013 |
Issued new shares through shareholder allocation, increasing capital from 1,046 million yen to 1,228 million yen; introduced the executive officer system; listed on the Tokyo Stock Exchange JASDAQ (Standard) following the merger of the Tokyo and Osaka Stock Exchanges. |
| 2014 |
Entered the manufacturing and sales business of construction materials, mainly civil engineering fasteners. |
| 2014 |
Acquired shares of Tetsuken Kōgyō Co., Ltd. (now SE Tetsuken Co., Ltd.). |
| 2014 |
Entered the manufacturing and sales business of construction materials centered on civil engineering fasteners; acquired shares of Tekkankōgyō Co., Ltd. (now SE Tekkankōgyō Co., Ltd.). |
| 2015 |
Entered the manufacturing and sales business of construction materials, mainly architectural steel frames. |
| 2015 |
Merged with Morita Kōsan Co., Ltd. and SE Tetsuken, changing the corporate name to SE Tetsuken Co., Ltd. |
| 2015 |
Established the SE Tetsuken Co., Ltd. Kanto branch office. |
| 2015 |
Acquired shares of Nakagawa Tekkōsho Co., Ltd. |
| 2015 |
Entered the manufacturing and sales business of construction materials focused on architectural steel frames; acquired shares of Morita Kōsan Co., Ltd. (now SE Tekkankōgyō Co., Ltd.); Morita Kōsan Co., Ltd. and SE Tekkankōgyō Co., Ltd. merged, changing the company name to SE Tekkankōgyō Co., Ltd.; established the SE Tekkankōgyō Kanto office; acquired shares of Nakagawa Tekkōsho Co., Ltd. |
| 2016 |
Established the SE Tetsuken Co., Ltd. Uetsu branch office. |
| 2016 |
Acquired the steel frame business of Marutomo Co., Ltd. |
| 2016 |
Established the ESCON Association. |
| 2016 |
Registered ESCON panels with NETIS. |
| 2016 |
'Fall Bridge Prevention Device (F-TD)' received the Good Design Award. |
| 2016 |
Established the SE Tekkankōgyō Uetsu office (acquired the steel frame business of Marutō Co., Ltd.); founded the ESCON Association; registered ESCON panels with NETIS; the 'Fall Bridge Prevention Device (F-TD)' received the Good Design Award. |
| 2017 |
Registered ESCON pressure plates with NETIS. |
| 2017 |
Registered ESCON pressure plates with NETIS. |
| 2018 |
Entered the manufacturing and sales business of general concrete secondary products, mainly concrete blocks. |
| 2018 |
Acquired shares of Honshu Co., Ltd. and merged with SE&A K Co., Ltd. The company name was changed to A&K Honshu Co., Ltd. |
| 2018 |
Implemented a 2-for-1 stock split of ordinary shares. |
| 2018 |
Entered the manufacturing and sales business of general concrete secondary products (construction materials) centered on concrete blocks. |
| 2018 |
Acquired shares of Honshū Co., Ltd. (now A & K Honshū Co., Ltd.). |
| 2018 |
SE A & K Co., Ltd. and Honshū Co., Ltd. merged, changing the company name to A & K Honshū Co., Ltd. |
| 2018 |
Implemented a stock split at a ratio of 2 shares for each ordinary share. |
| 2022 |
Moved to the Standard market following the restructuring of the Tokyo Stock Exchange. |
| 2022 |
Moved to the Standard market following the market reorganization of the Tokyo Stock Exchange. |
