| Company name | Group | Parent | Subsidiary | Customer | Supplier | Alliance | Bank | Shareholder |
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| 日本高圧コンクリートポール株式会社 | ||||||||
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| 東扇コンクリート工業株式会社 | ||||||||
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| 株式会社トーヨーアサノグループ | ||||||||
| 株式会社東商 | ||||||||
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Japan High Pressure Concrete Pole Co., Ltd. was established
Established the headquarters factory of Toyo Pile Hum Tube Manufacturing Co., Ltd. in Hara, Numazu City, Shizuoka Prefecture with a capital of 1.8 million yen.
Established Toyo Pile Hum Tube Manufacturing Co., Ltd. at the former headquarters site in December 1951 for the manufacture and sale of concrete piles and hum tubes.
Founded in December 1951
Toyo Pile Hume Pipe Manufacturing Co., Ltd. was established at the site of the former head office to manufacture and sell concrete piles and Hume pipes
Changed the company name to Asano Pool Co., Ltd. in April 1954.
The company name was changed to Asano Pole Co., Ltd.
Established Japan High-Pressure Concrete Pole Co., Ltd. with capital of 2,000 thousand yen.
Opened the current Tokyo office in April 1956.
The present Tokyo Sales Office was opened
In September 1957, our Numazu plant became a JIS-certified factory.
The company’s Numazu Plant became a JIS-certified plant
Renamed Japan High-Pressure Concrete Pole Co., Ltd. to Asano Pole Co., Ltd.
Capital increased to 105 million yen and listed shares on the Second Section of the Tokyo Stock Exchange.
Listed on the Main Market of the Nagoya Stock Exchange.
In September 1962, shares were listed on the Second Section of the Tokyo Stock Exchange.
Stock listing: Tokyo Stock Exchange Standard Market (listed in September 1962)
The company’s shares were listed on the Second Section of the Tokyo Stock Exchange
In September 1968, a new Oga factory was established in Kakegawa City, Shizuoka Prefecture.
The Ogasa Plant was newly established in Kakegawa, Shizuoka Prefecture
Built the Ogasa Plant and began production.
In November 1969, a new Numazu factory was established in Numazu City, Shizuoka Prefecture.
The Numazu Plant was newly established in Numazu, Shizuoka Prefecture
Built the Numazu Plant and began production.
In September 1971, Higashi Shō Co., Ltd. was founded.
Tosho Co., Ltd. was established
In September 1972, Japan Segment Industrial Co., Ltd. was established.
Established Nippon Segment Kogyo Co., Ltd.
In June 1973, Toupar Kōsan Co., Ltd. (now TA Pile Manufacturing Co., Ltd.) was established.
Established Topal Kosan Co., Ltd. (now TA Pile Manufacturing Co., Ltd.).
Production began in June 1974
Established the Tokyo Plant in Mizuho Town, Nishitama District, Tokyo.
Established Tokyu Concrete Industry Co., Ltd. with capital of 100,000 thousand yen.
Production started.
Merged with Higashi-ō Asano Pool Co., Ltd. and renamed the company to Toyo Asano Co., Ltd.
Capital increased to 501,420 thousand yen.
Renamed Tokyu Concrete Industry Co., Ltd. to Higashi-ō Concrete Industry Co., Ltd. and merged.
In October 1982, a specific construction business license was obtained (tobii and civil engineering).
Obtained a special construction business license for scaffolding and earthwork.
Obtained special construction industry license (tobii and civil engineering).
Asano Pole Co., Ltd. built a Tokyo plant and began production.
Renamed Tokyu Concrete Industry Co., Ltd. to Higashikiri Concrete Industry Co., Ltd.
Merged with Tosen Concrete Industry Co., Ltd. and changed the company name to Tosen Asano Pole Co., Ltd.
Higashikiri Concrete Industry Co., Ltd. and Asano Pole Co., Ltd. merged and renamed to 'Higashikiri Asano Pole Co., Ltd.'.
On March 1, 1997, to manufacture and sell concrete piles, Toyo Pile Hume Pipe Manufacturing Co., Ltd. and Higashi Asano Pore Co., Ltd. merged and changed the company name to Toyo Asano Co., Ltd.
History of product and construction method development (after the merger)
Toyo Pile Hume Pipe Manufacturing Works Co., Ltd., which manufactured and sold concrete piles, merged with Tosen Asano Pole Co., Ltd., and the company name was changed to Toyo Asano Co., Ltd.
Merged with Higashikiri Asano Pole Co., Ltd. and renamed to 'Toyo Asano Co., Ltd.'. Capital increased to 720,420 thousand yen.
History of product and construction method development (after the merger)
History of product and construction method development (after the merger)
History of product and construction method development (after the merger)
In December 2001, the company celebrated its 50th anniversary.
Celebrated its 50th anniversary.
In February 2002, the Numazu plant was closed and concrete pile production was consolidated at the Tokyo plant.
Closed the Numazu Plant and consolidated concrete pile production at the Tokyo Plant.
In September 2002, a large rental store was established on the former Numazu plant site, attracting the Cainz Home Center.
Built a large retail store on the former Numazu Plant site and attracted a CAINZ home center.
History of product and construction method development (after the merger)
In 2010, the company began taking systematic steps to reduce CO₂ emissions under the Tokyo Metropolitan Government’s “Total Emission Reduction Obligation and Emissions Trading System.”
Toyo Asano Tokyo plant has been systematically working on CO₂ reduction under Tokyo Metropolitan Government's 'Total Reduction Obligation and Emission Trading System' since 2010.
History of product and construction method development (after the merger)
In May 2017, the company transitioned to an audit committee company to improve corporate governance and enable rapid decision-making.
Transitioned to a company with an Audit and Supervisory Committee to further enhance corporate governance, enable faster decision-making and business execution, and improve the fairness, transparency, and efficiency of management.
History of product and construction method development (after the merger)
In December 2018, the company was selected as a 'Regional Future Leading Company' by the Ministry of Economy, Trade and Industry as a core enterprise capable of driving regional economic development.
Selected by the Ministry of Economy, Trade and Industry as a Regional Future Driving Company, a regional core company expected to lead regional economic growth.
In March 2019, a Nomination and Compensation Committee was established to enhance the independence, objectivity, and accountability of the board of directors.
The grant was approved
Established a Nomination and Compensation Committee to enhance the independence, objectivity, and accountability of the Board of Directors and further strengthen the corporate governance system.
Co-founded Mizuho Town Regional Smart Energy Co., Ltd. with CD Energy Direct, Iruma Gas, and INPEX.
Mizuho Town Regional Smart Energy Co., Ltd. was established
In July 2019, Toyo Asano jointly established 'Mizuho Town Regional Smart Energy Co., Ltd.' with CD Energy Direct, Iruma Gas, and INPEX (International Oil Development Corp.).
In January 2020, a shareholder benefit program was introduced, offering products from the Numazu area to shareholders as a gesture of appreciation and community contribution.
Introduced a shareholder benefit program featuring products from the area around Numazu City, Shizuoka Prefecture, to express appreciation to shareholders, increase the appeal of investing in the company's shares, encourage long-term shareholding, promote local information from Numazu, and contribute to the local community.
Commenced on-site construction for the Mizuho Town Regional Smart Energy project.
On-site construction began
Carried out the delivery of gas engines.
Gas engine delivered to the site
Started partial power supply and heat transfer for Mizuho Town Regional Smart Energy.
Partial electricity supply and heat sharing began
This project was certified under Tokyo Metropolitan Government's 'Smart Energy Area Promotion Project' and began full operation in April 2021.
History of product and construction method development (after the merger)
History of product and construction method development (after the merger)
Held the completion ceremony for the heat transfer equipment.
Completion ceremony held
In December 2021, the company celebrated its 70th anniversary.
Celebrated its 70th anniversary.
History of product and construction method development (after the merger)
Commenced operation of the heat transfer equipment.
In April 2022, due to a review of market classifications by the Tokyo Stock Exchange, the company moved from the Second Section to the Standard Market.
Heat-sharing equipment began operation
Following the Tokyo Stock Exchange's market restructuring, transferred from the Second Section to the Standard Market.
Cogeneration Grand Prize 2023: Collection of Outstanding Cases
In February 2023, all shares of Japan Segment Industrial Co., Ltd. were transferred, and the company was excluded from its consolidated subsidiaries.
Transferred all shares in Nippon Segment Kogyo Co., Ltd., which was consequently removed from the company's consolidated subsidiaries.
History of product and construction method development (after the merger)
In June 2023, the capital was reduced to 100 million yen.
History of product and construction method development (after the merger)
Reduced capital to ¥100 million.
History of product and construction method development (after the merger)
History of product and construction method development (after the merger)
Listed on the Main Market of the Nagoya Stock Exchange.
Listed on the Nagoya Stock Exchange Main Market in February 2024
Nagoya Stock Exchange Main Market (listed in February 2024)
Main listing on the Nagoya Stock Exchange.
History of product and construction method development (after the merger)
Published the organizational chart as of March 1, 2025.
Moved its head office to Hara, Numazu, Shizuoka Prefecture, following the completion of its new headquarters in March 2025
Relocated the head office to Hara, Numazu City, Shizuoka Prefecture, upon completion of the new head office.
History of product and construction method development (after the merger)
Toyo Asano Corporation's Tokyo factory assisted in the filming of the movie 'Kamen Rider Zett: Mission of Goodbye'. It was used as a filming location and is listed as a cooperating company in the end credits. The movie is scheduled to be released on July 24, 2026.
On February 13, 2026, Shizuoka Daiichi Television's program 'Marugoto PLUS' broadcast an interview with the president at our new headquarters in Numazu.
TOYO ASANO Corporation's RANK-PHC piles and RANK-ST piles have been certified as compliant by the Japan Building Center.
Toyo Asano Corporation participated in the Nagoya Stock Exchange IR Seminar on July 28, 2025, providing information to many individual investors.
Toyo Asano Corporation relocated to a new headquarters on March 21, 2025.
Toyo Asano Co., Ltd. secured a green loan agreement with Shizuoka Bank to finance the construction of its new headquarters, and received certification as an environmentally conscious green building.
Toyo Asano Corporation held an online briefing session for individual investors on November 9, 2024, which was viewed by many participants.
Toyo Asano has formulated a Green Loan Framework for the construction of its new headquarters and has signed an agreement with Mitsubishi UFJ Bank.
Toyo Asano Corporation participated in the Nagoya Stock Exchange IR Seminar on July 29, 2024, and was viewed by many individual investors.