35
Selling of wind energy, photovoltaic energy, hydraulic energy and gas; selling of agri-foodstuffs; selling of iron and steel goods; administrative management of industrial areas, installations and/or processes for the production of hydroelectric and wind energy; administrative management of industrial areas, installations and/or processes for the reclamation, disposal, treatment and marketing of waste and for environmental and water protection
37
Construction, repair and installation relating to installations for the production of energy and industrial installations and/or processes for the reclamation, disposal, treatment and marketing of waste and for environmental and water protection; construction, repair and installation relating to installations for the production of energy and industrial installations and/or processes for the production of hydroelectric and wind energy and to installations for the production of energy from renewable sources
39
Transport and distribution of energy and gas, gas accumulation; transport of agri-foodstuffs
42
Research, development and design for the creation and management of industrial areas, installations and/or processes for the reclamation, disposal, treatment and marketing of waste and for environmental and water protection; research, development and consultancy for the protection, exploitation and management of environmental resources; preparation of plans for construction, design, research and development in relation to technological installations in the sectors of environmental protection, heat and energy production, and waste treatment