Provides waste and water treatment and recycling, water environment and remediation, environmental services, and related construction. Based in Osaka.

Designs workplaces, lounges, showrooms, and labs.

Offers international engineering, design and construction services. Corporate information and news, and technical articles. Content available in English and Japanese.

Civil engineering company specializing in the planning, design, and construction supervision of long span bridges, infrastructure, and computer systems.

Specializing in electrical works.

Planning and construction of buildings, and buildings management.

Civil engineering for offices and government buildings.

Construction company involved in building planning, design, maintenance, urban renewal, and environmental technology.

Construction company providing renovation services.

Construction firm involved with high rise, historic, and art related buildings, as well as civil engineering projects.

Construction of thermal plants.

Design of commercial and corporate office interiors.

Construction nuclear and chemical plants.

Civil engineering projects, such as nuclear power plants.

Construction contractor providing electric facility installations.

Manufactures and sells metal products for architecture, buildings, and conduits. With introduction of products, statement of accounts, employment, and download of CAD data.

Osaba based construction company of pre-stressed concrete tanks and bridges.

production and sale of pre-stressed concrete products.

Makes loaders, tracked excavators, shovels, dozers, carriers, motor graders, dump trucks, and tunnelers, plus mining, electronics, industrial, environmental products, and their component parts.

Large civil engineering projects.

Architectural construction and interior finishing.

Construction of facilities and industrial equipment.

Specializes in heavy-steel modular and mobile buildings. Manufactures and ships overseas.

Construction of buildings and roads.

Construction of architectural and electrical facilities.