Akio Dobashi

OSJB Holdings Corp. operates as a holding company that engages in the planning and management of its group companies those are engaged in the design, fabrication, installation, and construction of bridges, steel frames, and steel structures. It operates through the following segments: Construction, Steel Structure and Others. The Construction segment engages in the construction, manufacture and sale of pre-stressed concrete; construction of pneumatic caisson and repair works; design and construction of anti-seismic reinforcement; and sale of construction materials. The Steel Structure segment handles the design, production, and installation of steel structures such as bridges and others. The Others segment engages in the generation and sale of power through solar power generation. The company was founded by Katsujiro Iwai on July 7, 1919 and is headquartered in Tokyo, Japan.

Maeda Corp. engages in building construction and civil engineering works. It operates through the following segments: Construction, Civil Engineering, Manufacturing, Infrastructure Operations, and Others. The Construction segment offers contract work for buildings and other related services. The Civil Engineering segment includes civil works and services. The Manufacturing segment handles the manufacturing and sale of construction materials. The Infrastructure Operations segment deals with renewable energy and concession services. The Others segment involves in the real estate business. The company was founded by Matabee Maeda on January 8, 1919 and is headquartered in Tokyo, Japan.