Eiji Yonezawa

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.

Part of Oriental Consultants Holdings Co., Ltd., InterAct KK is a Japanese company that provides corporate strategic planning and marketing investigation services. The company is based in Tokyo, Japan.

Asano Taiseikiso Engineering Co., Ltd. engages in construction and engineering consulting works. It provides engineering and consultations in the following fields: geotechnical and geological issues, soil and groundwater contamination, and seismic diagnosis and reinforcement design for buildings. The company was founded in September 1930 and is headquartered in Tokyo, Japan.

Engineering & Consulting Firms Association Japan engages in the application and transfer of technology through consulting services. The company was founded on April 4, 1964 and is headquartered in Tokyo, Japan.