Installations, machines and apparatus for the treatment of water, in particular, for the purification of waste water; equipment and tools for the treatment of water, in particular, for the purification of waste water, namely, water purification machines, water purification units, water purifiers, water filters

Construction and repair, namely, the construction, maintenance, repair and renovation of installations, engineering structures and equipment for the treatment of water, in particular, for the purification of waste water; installation of mechanical engineering apparatus for building; installation, maintenance and repair of equipment, pipes and tubes and tools connected therewith, in particular, for the purification of waste water

Waste water treatment services; water treatment services, in particular, waste water purification, including, its recovery or reception and biological and/or chemical purification; waste treatment services; implementation of waste water purification processes, namely, providing waste water treatment and reprocessing services

Engineering services, in particular, civil engineering and mechanical engineering for building, in particular, in the area of water purification, including, planning, design, research and geological estimation services and design and development of waste water purification processes