Apparatus for water treatment, namely, wastewater treatment systems; installations, apparatus, machines, devices and equipment for wastewater purification, namely, submerged fixed-film units, filtration units and integrated fixed-film activated sludge systems

Construction and reconstruction services, namely, building, maintaining and repairing installations, construction works and apparatus for water treatment and waste water purification; construction and maintenance services relating to sanitary engineering, namely construction and maintenance of wastewater treatment facilities; construction services relating to sanitary engineering, namely, construction of wastewater treatment plants, installation of biological reactors and filtration equipment; maintaining and repairing apparatus, machines, pipelines and the fittings thereof for water treatment and wastewater purification

Water treatment and wastewater purification services, including collecting and receiving wastewater and biological and/or chemical treatment thereof; services of treating waste materials

Engineering services, civil engineering and sanitary engineering in the field of wastewater purification including engineering planning; research in the field of wastewater treatment; scientific research consulting in the field of wastewater treatment