Oriental Consultants Holdings Company Limited, through its subsidiaries, provides infrastructure management services in Japan and internationally. The company offers intellectual services, such as research, planning, design, investigation, evaluation, guidance, maintenance, operation management, etc. related to water supply wastewater, waste, environment, and information, as well as construction supervision/GIS, spatial information, surveying/measurement, traffic observation/analysis, information processing, and equipment sales/rental. It also provides environmental management services, which include geological/soil survey, environmental remediation, structural survey/renewal, hydraulic analysis, drilling work, demolition work, hot spring construction, residential land, construction transactions, etc. In addition, the company engages in the software sales and development, real estate rental businesses, etc. Further, it offers construction management, measurement control, and asset management services; various IT solutions; and human resources and business process outsourcing, management, temporary, staffing, etc. 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.