Provides comprehensive construction services including civil engineering, building construction, and machinery installation works. Handles large-scale infrastructure projects and building construction, delivering integrated construction solutions.

Supplies and sells electricity in Okinawa Prefecture, operating integrated services from power generation through transmission and distribution to retail. Promotes utilization of renewable energy while meeting regional electricity demand.

Designs, constructs, and sells residential and commercial buildings including detached houses, apartment complexes, commercial facilities, and industrial structures. Also provides renovation and remodeling services.

Designs, manufactures, and constructs steel bridges, tanks, and steel structures. Engages in large-scale metal product fabrication for infrastructure projects, including bridge construction and industrial structural works.

Manufactures and sells transport machinery and conveying equipment as core business. Provides integrated services from design and manufacturing of industrial machinery to maintenance, offering system solutions for logistics and manufacturing sectors.

Manufactures and sells power transmission equipment including chains, sprockets, belts, and gearboxes for automotive, industrial machinery, and construction equipment applications.

Operates railway and bus services primarily in the Kansai region, including multiple railway lines and an extensive bus network. Also engages in real estate development and commercial facility operations as an integrated transportation company.