6
Transportable buildings of metal and related operating technology adapted to waste water purification
37
Building construction; repair; installation services; including the aforesaid services in the field of carrying out technical projects regarding re-use and processing of water and energy; repair and maintenance of industrial and machine installations; constrution, installation and maintenance of water purification installations; laying of pipework
40
Water treatment and water purification services; Water recycling services; recycling and treatment of energy products, including water, including with the aim of re-use thereof; rental of water treatment installations; treatment of materials; water purification; technical consultancy in connection with the aforesaid services
42
Scientific and technological consultancy and information relating to building, repair, installation, the aforesaid services in the field of carrying out technical projects regarding recycling and processing of water and energy, repair and maintenance of industrial and machine installations, construction, installation and maintenance of water purification installations, laying of pipework, water treatment and purification, water recycling, recycling and processing of energy products, including water, including for the re-use thereof, rental of water treatment installations, water purification, technical consultancy related to the aforesaid services; technological, industrial and academic research and studies; all the services exclusively relating to water purification installations, development and research with regard thereto