Yasuji Nagaya

Yachiyo Engineering Co., Ltd. engages in the planning, research, surveying, design, construction, management and supervision related services in infrastructure and construction industries. The company services includes in the fields of water resources and disaster risk management; water supply and sewerage; solid waste management; electric power system and plants; broadcasting and communication; urban and regional development; architecture; industrial development and promotions; and road, bridge, transport and railways. It also provides technical cooperation and guidance services; date processing, analysis utilizing electric computers and related equipment; and environmental measurement certification business. The company was founded on January 29, 1963 and is headquartered in Tokyo, Japan.

Padeco Co., Ltd. engages in international development and consulting services. Its business includes engineering and project management in highways, ports, railways, water, and others, economics, climate change, transport, urban and regional planning, education, finance, social development, policy analysis, law, systems analysis, tourism, environment, institutional development, governance, information technology, project management, and other key sectors. The company was founded on January 7, 1983 and is headquartered in Tokyo, Japan.

Pacific Consultants Co., Ltd. provides integrated construction consulting services in engineering and infrastructure design. Its services include the land conservation, transport infrastructure, facility engineering, public management, information systems, project planning, energy and environment, geotechnical, business development, research and development; and others. The company was founded on September 4, 1951 and is headquartered in Tokyo, Japan.

Kokusai Kogyo Co., Ltd. provides engineering services. The firm offers various core technology services, including surveying and mapping, social, environmental, geological, resource, marine, and relics and cultural artifacts surveying services. The company was founded in September, 1947 and is located in Tokyo, Japan.

Part of NJS Co., Ltd., NJS Consultants Co., Ltd. is a Japanese company that provides engineering consulting services. The company is based in Tokyo, Japan.

CTI Engineering International Co., Ltd. engages in the engineering consultancy services of study, planning, designing, construction supervision, and project management for the infrastructure development and socio-environmental improvement in foreign countries. Its services include the following engineering areas such as river improvement and flood control, urban drainage, water resources management, sewerage, land transport, water quality management, solid waste management, riparian structure, dam structure, road structure, bridge structure, participatory approach to development, organizational and institutional strengthening, socio economic improvement, environmental assessment, and others. The company was founded on April 1, 1999 and is headquartered in Tokyo, Japan.

Association of Japanese Consulting Engineers engages in the private consulting engineers. Its consultancy contents include advancement of science and technology, development of industry, sustainable considerations in built-environment, and enhancement of human safety and welfare. The company was founded in 1974 and is headquartered in Tokyo, Japan.

Part of NJS Co., Ltd., NJS Design Center KK engages in water supply. The company is based in Shinjuku-ku, Japan.

Oriental Consultants Co., Ltd. provides planning, surveying, designing and evaluation services for public construction projects. It offers consulting services to support the completion of various projects in a range of situations, from upstream studies, such as planning, surveys, and design to downstream processes, including implementation, operation, maintenance, and reconstruction. The firm provides services in the fields of urban and regional planning/social policy, road transportation, development of renewable energy/environmental management, landscapes, tourism, PPP/PFI/CMr/operational management, roads and expressways, bridges, tunnels and underground structures, water and disaster management. The company was founded on December 24, 1957 and is headquartered in Tokyo, Japan.