Oriental Consultants Holdings Company Limited, through its subsidiaries, engages in the infrastructure management services business in Japan and internationally. The company offers consulting services, such as intellectual services for projects related to social environment development; construction surveys, design, supervision, GIS, spatial information, surveying, and measurement; traffic observation and analysis, and information processing; IT solutions related to construction management, measurement control, and asset management; and outsourcing and resource management related to human resources and business processes. It is also involved in equipment sales and rental; geological and soil surveys; environmental and environmental cleanup; structural surveys and renovations; hydraulic analysis, well drilling, demolition work, and hot spring construction; and residential land and construction transactions. The company was formerly known as ACKG Limited and changed its name to Oriental Consultants Holdings Company Limited in December 2018. Oriental Consultants Holdings Company Limited was founded in 1957 and is headquartered in Tokyo, Japan.