Obayashi 

Obayashi Corporation is a leading Japanese construction firm with an extensive international presence, operating across Japan, North America, Asia, the Middle East, Europe, and Oceania. Its core business involves constructing a wide array of buildings, including corporate offices, residential condominiums, commercial facilities, industrial factories, hospitals, and educational institutions. Additionally, the company undertakes significant civil engineering projects such as tunnels, bridges, dams, river infrastructure, railways, and expressways. Beyond construction, Obayashi engages in real estate development and leasing, primarily in major metropolitan areas, along with comprehensive property management services. It is also actively involved in renewable energy generation through solar, biomass, hydroelectric, geothermal, and wind power initiatives, as well as public-private partnerships (PPP) and agricultural ventures. The company's diversified portfolio further includes selling construction materials and equipment, developing and marketing computer software, distributing and leasing electronic goods, offering finance-related services, and managing golf clubs. Moreover, Obayashi provides urban planning, contracted engineering, management, and consultancy services, and specializes in mechanical and electrical (M&E) system design and installation. The company was established in Tokyo, Japan, in 1892, where it maintains its headquarters.