Provides comprehensive environmental and facility management services for businesses, including environmental services, building management, pest control, air conditioning maintenance, and industrial waste disposal.

Provides environmental education and services for sustainable society realization. Offers awareness activities on environmental issues, training programs, and consulting services to support environmental consideration by corporations and organizations.

Operates retail electricity business centered on renewable energy generation and sales, gas retail services, and energy-related solutions. Supplies electricity and gas to residential and commercial customers, contributing to a low-carbon society.

Engages in petroleum refining and sales, petrochemical product manufacturing and sales, gas business, and renewable energy operations. Supplies fuels and lubricants through retail networks including gas stations.

Manufactures and sells fluid machinery including pumps, compressors, and vacuum equipment, as well as semiconductor manufacturing equipment, environmental plants, and industrial machinery for diverse industrial sectors.

Comprehensive trading company procuring and wholesaling diverse products including chemicals, pharmaceuticals, food, electronic materials, and machinery to manufacturing and distribution customers domestically and internationally.

Provides aerial survey and investigation services using aircraft, including topographic mapping, resource exploration, and environmental surveys. Also operates geographic information system-related businesses.

Integrated engineering and construction company specializing in plant design and construction for oil, gas, chemical, and power sectors. Provides project management, energy infrastructure development, and environmental water treatment services globally.

Manufactures and sells processed steel materials including steel pipes and steel plates, as well as machinery equipment. Provides component supply for construction and industrial machinery, along with metal processing services.

Provides plant engineering and construction services for petrochemical, LNG, and power infrastructure projects. Handles design, construction, and maintenance of large-scale projects domestically and internationally.