37
Installation of environmental engineering systems; Repair and Maintenance, in relation to the following fields: Installation of environmental engineering systems; Installation services, in relation to the following fields: Installation of environmental engineering systems
40
Recycling and waste treatment; Recycling services; Waste management services [recycling]; Water treatment and purification; Water treating; Water purification; Water treating; Air purification; Rental of equipment for the treatment and transformation of materials, for energy production and for custom manufacturing; Air treatment
41
Education and training relating to nature conservation and the environment
42
Natural science services; Earth science services; Science and technology services; Engineering services; Testing, authentication and quality control; Providing technological information about environmentally-conscious and green innovations; Environmental testing services to detect contaminants in water
44
Agriculture, aquaculture, horticulture and forestry services