Safety first
Every job is planned and executed so that our people and our clients' facilities go home unharmed. No deadline is worth a shortcut.
Quality is the pathway to
Excellence
Built on craftsmanship, safety, and absolute confidence in our work.
Company
About Us
Taisei Kougyo specializes in mechanical installation, electrical installation, heavy transport, control systems, and medical installations. Based in Tokyo, Japan, we have served our clients for over 50 years.
What we stand for
Quality is the pathway to excellence.
Craftsmanship
Decades of hands-on expertise across electrical, mechanical, and heavy work — measured, fitted, and commissioned to last.
Confidence on site
When the work is critical and the margin for error is zero, clients trust us to get it right the first time, every time.
Leadership
The team
President
Yasuyuki Komagome
Yasuyuki Komagome leads Taisei Kougyo as President. A first-class registered electrical works execution engineer, he oversees control, low- and high-voltage, and mechanical design.
Our history
Seven decades of engineering.
April 1952
Founded with a focus on thermal power plant construction. As the business grew, the company was renamed Taisei Kougyo Co., Ltd. in March 1960 and relocated to 1-20 Kanda Jimbocho, Chiyoda-ku, Tokyo.
September 1990
Established a partnership with Williams Patent Crusher & Pulverizer Co., Inc. The Williams-type crusher was introduced, and Taisei began regular maintenance work for recycling plants across Japan.
October 2017
Began a new contract with APTIM Federal Services LLC for the RMMR project, opening up service work for U.S. military facilities in Japan.